Discussion about math, puzzles, games and fun. Useful symbols: ÷ × ½ √ ∞ ≠ ≤ ≥ ≈ ⇒ ± ∈ Δ θ ∴ ∑ ∫ π -¹ ² ³ °

You are not logged in.

- Topics: Active | Unanswered

**ganesh****Administrator**- Registered: 2005-06-28
- Posts: 30,276

Hi,

.

#7495. Convert 2.454545.... into a rational number.

It is no good to try to stop knowledge from going forward. Ignorance is never better than knowledge - Enrico Fermi.

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

Offline

**ganesh****Administrator**- Registered: 2005-06-28
- Posts: 30,276

Hi,

.

7496. Evaluate:

It is no good to try to stop knowledge from going forward. Ignorance is never better than knowledge - Enrico Fermi.

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

Offline

**Monox D. I-Fly****Member**- From: Indonesia
- Registered: 2015-12-02
- Posts: 2,000

Actually I never watch Star Wars and not interested in it anyway, but I choose a Yoda card as my avatar in honor of our great friend bobbym who has passed away.

May his adventurous soul rest in peace at heaven.

Offline

**ganesh****Administrator**- Registered: 2005-06-28
- Posts: 30,276

Hi,

.

The solution #7496 is correct. Excellent, Monox D. I-Fly!

#7497. How many numbers between 200 and 600 are divisible by 4, 8, and 12? (both the numbers included)

It is no good to try to stop knowledge from going forward. Ignorance is never better than knowledge - Enrico Fermi.

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

Offline

**ganesh****Administrator**- Registered: 2005-06-28
- Posts: 30,276

Hi,

#7498. Choose the best option:

(a) 11

(b) 27

(c) 81

(d) All of these.

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

Offline

**ganesh****Administrator**- Registered: 2005-06-28
- Posts: 30,276

Hi,

#7499. Find the last digit of the number:

.Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

Offline

**Monox D. I-Fly****Member**- From: Indonesia
- Registered: 2015-12-02
- Posts: 2,000

Actually I never watch Star Wars and not interested in it anyway, but I choose a Yoda card as my avatar in honor of our great friend bobbym who has passed away.

May his adventurous soul rest in peace at heaven.

Offline

**ganesh****Administrator**- Registered: 2005-06-28
- Posts: 30,276

Hi,

The solution #7499 is correct. Excellent, Monox D. I-Fly!

#7500. Find the average of the following set of scores:

566, 455, 231, 678, 989, 342, 715.

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

Offline

**ganesh****Administrator**- Registered: 2005-06-28
- Posts: 30,276

Hi,

.

#7501. If 3a + 2b : a + 10b = 1 : 4, then find a : b.

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

Offline

**Monox D. I-Fly****Member**- From: Indonesia
- Registered: 2015-12-02
- Posts: 2,000

Actually I never watch Star Wars and not interested in it anyway, but I choose a Yoda card as my avatar in honor of our great friend bobbym who has passed away.

May his adventurous soul rest in peace at heaven.

Offline

**ganesh****Administrator**- Registered: 2005-06-28
- Posts: 30,276

Hi,

Good attempt, Monox D. I-Fly!

#7502. The interior angles of a triangle are in the ratio 2 : 3 : 4. Find the biggest angle.

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

Offline

**Monox D. I-Fly****Member**- From: Indonesia
- Registered: 2015-12-02
- Posts: 2,000

May his adventurous soul rest in peace at heaven.

Offline

**ganesh****Administrator**- Registered: 2005-06-28
- Posts: 30,276

Hi,

.

7503. If A : B = 2 : 3, B : C = 1 : 2, and C : D = 5 : 3, find A : D.

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

Offline

**ganesh****Administrator**- Registered: 2005-06-28
- Posts: 30,276

Hi,

.

#7504. Three natural numbers are in the ratio 2 : 3 : 5. The sum of their squares is 342. Find the numbers.

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

Offline

**Monox D. I-Fly****Member**- From: Indonesia
- Registered: 2015-12-02
- Posts: 2,000

May his adventurous soul rest in peace at heaven.

Offline

**ganesh****Administrator**- Registered: 2005-06-28
- Posts: 30,276

Hi,

The solution #7504 is correct. Neat work, Monox D. I-Fly!

#7505. If a : b = 3 : 5, then find the value of (3a + 4b) : (5a + 3b).

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

Offline

**Monox D. I-Fly****Member**- From: Indonesia
- Registered: 2015-12-02
- Posts: 2,000

May his adventurous soul rest in peace at heaven.

Offline

**ganesh****Administrator**- Registered: 2005-06-28
- Posts: 30,276

Hi,

.

Good attempt, Monox D. I-Fly!

#7506. Find the value of

if .Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

Offline

**ganesh****Administrator**- Registered: 2005-06-28
- Posts: 30,276

Hi,

.

#7507. The total number of students in a school is 1224. If the number of girls in the school is 600, then what is the respective ratio of the total number of boys and the total number of girls in the school?

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

Offline

**ganesh****Administrator**- Registered: 2005-06-28
- Posts: 30,276

Hi,

#7508. If A : B = 2 : 3, B : C = 2 : 4, and C : D = 2 : 5, find the ratio A : D.

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

Offline

**Monox D. I-Fly****Member**- From: Indonesia
- Registered: 2015-12-02
- Posts: 2,000

May his adventurous soul rest in peace at heaven.

Offline

**ganesh****Administrator**- Registered: 2005-06-28
- Posts: 30,276

Hi,

The solution #7507 is correct. Neat work, Monox D. I-Fly!

.

#7509. 40% of a number is equal to three-fourth of another number. What is the ratio of the first number and the second number?

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

Offline

**ganesh****Administrator**- Registered: 2005-06-28
- Posts: 30,276

Hi,

.

#7510. The ratio of the number of boys and that of girls in a school having 504 students is 13 : 11. What will be the new ratio if 3 more girls are admitted?

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

Offline

**ganesh****Administrator**- Registered: 2005-06-28
- Posts: 30,276

Hi,

#7511. If x : y = 7 : 3, find the value of

.Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

Offline

**ganesh****Administrator**- Registered: 2005-06-28
- Posts: 30,276

Hi,

.

#7512. If 40 percent of a number is added to another number, then itt becomes 125 percent of itself. What will be the ratio of the first and the second number?

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

Offline