Explanation

3 × 3 = 9 - 1 = 8

8 × 3 = 24 - 2 = 22

22 × 3 = 66 - 3 = 63

63 × 3 = 189 - 4 = 189

Explanation

= 5 × 5 × 5 + 5

ND28-1-2023

Explanation

• To calculate 10.7 × 3 − 7, first multiply 10.7 by 3, then subtract 7:
• 10.7 × 3 = 32.1
• 32.1 − 7 = 25.1
• So, the result is 25.1.

Explanation

• Let's solve the expression:
• (6 x 11) - (28 + 38) = (66) - (66) = 0
• So, the answer is 0.

Explanation

Explanation

A Co-prime number is a set of numbers or integers which have only 1 as their common factor i.e. their highest common factor (HCF) will be 1. Co-prime numbers are also known as relatively prime or mutually prime numbers. It is important that there should be two numbers in order to form co-primes.

Explanation

To find the number with the most divisors, let's analyze each option:

• 99 = 3 × 3 × 11 (3 divisors)
• 101 (prime number, only 2 divisors: 1 and 101)
• 182 = 2 × 7 × 13 (4 divisors)
• 176 = 2 × 2 × 2 × 2 × 11 (6 divisors)

The number with the most divisors is 176, with 6 divisors.

Explanation

1. To solve 42 × (63 + 60):
2. First, calculate 63 + 60 = 123.
3. Then, multiply 42 by 123
4. 42 × 123 = 5166
5. So, the answer is 5166.

Explanation

The sum of all the even numbers 1 to 100 can be found by using the formula, S = n(n + 1), where n is the total number of even numbers from 1 to 100.

There are a total of 50 even numbers, so n = 50. 

Therefore, by substituting the value of n = 50, we get,

S = 50(50 + 1)

S = 50 × 51

S = 2550

Explanation

11 × 15 = 165

11 × 19 = 209

12 × 15 = 180

11 × 19 = 228