Question

The sum of exponents of prime factors in the prime factorisation of 196 is
( Board 2020 ODISHA Standard )
(a) 3
(b) 4
(c) 5
(d) 2​

Answer 1

Answer:

b) 4

Explanation:

prime factorisation of 196 is:-

196= 2×2×7×7

=> 98=2^2 ×7^2

we know that , the exponent of a number is a^m is m

so , the sum of powers = 2+2=4