Q4 of 124 Page 1

The sum of the exponents of the prime factors in the prime factorisation of 196, is

The prime factorization of 196 is as follows:

196 = 2 × 2 × 7 × 7

⇒ 98 = 2² ×7²

We know that the exponent of a number a^m is m.

∴The sum of powers = 2 + 2 = 4

The LCM of two numbers is 1200. Which of the following cannot be their HCF?

If n = 2³ × 3⁴ × 5⁴ × 7, then the number of consecutive zeros in n, where n is a natural number, is

The number of decimal places after which the decimal expansion of the rational number will terminate, is

If p₁ and p₂ are two odd prime numbers such that p₁ > p₂, then p₁² – p₂² is