Question

The sum of exponents of prime factors in the prime-factorisation of 196 is ______.

विकल्प

• 3

• 4

• 5

• 2

Answer 1

The sum of exponents of prime factors in the prime-factorisation of 196 is 4.

Explanation:

Prime factors of 196 = 2² × 7²

2	196
2	98
7	49
7	7
	1

∴ The sum of exponents of prime factor = 2 + 2 = 4.