Explanation

Rule: A number is divisible by 9 if sum of its digits is divisible by 9.

326 = 3+2+6 = 11 - No

324 = 3+2+4 = 9 - Yes

325 = 3+2+5 = 10 - No

Last verified on 07-10-2026

Explanation

4 × 5 × q = 5 × p × 2

20q = 10p

p/q = 20/10 = 2

Last verified on 06-10-2026

Explanation

LCM of 18 and 24

18 = 2 × 3²

24 = 2³ × 3

LCM = 2³ × 3² = 8 × 9 = 72

Last verified on 06-10-2026

Explanation

845 ÷ 7

7 × 120 = 840

845 - 840 = 5

Remainder = 5

Last verified on 06-10-2026

Explanation

3/4 + 1/8

= 6/8 + 1/8

= 7/8

Last verified on 06-10-2026

Explanation

• An octagon has 8 sides. ⬡
• Interior Angle Sum: 1,080°
• Regular Octagon: All 8 sides and angles are equal.
• Each Interior Angle: 135°
• Example: Stop sign

Explanation

Let's denote the unknown number as 𝑥

According to the problem, the number is first multiplied by 7 and then divided by 4, resulting in 14.

This can be expressed as the equation:

7x/4 - 14

To solve for 𝑥 follow these steps:

Multiply both sides of the equation by 4 to eliminate the fraction:

7x = 14 x 4

 7x = 56 

2. Divide both sides by 7 to solve for x:

x = 56/7

x = 8 

therefore, the number is 8

Explanation

√64 = 8

8 + 3 = 11.

Last verified on 05-10-2026

Explanation

18 + 27 = 45

Last verified on 29-09-2026

Explanation

• 2 is the only even prime number.
• A prime number has exactly two factors: 1 and itself.
• The factors of 2 are 1 and 2.

Last verified on 28-09-2026