Question

Give the Answer of 4th question by solving it ​

Answer 1

Answer:

Option (c) i.e, 90

Step-by-step explanation:

Now, the number of cyphers (zeroes) in a number is determined by the maximum number of pairs of 5's and 2's in the prime factorisation of that number.

So, the first step here is to factorise the product of 20^50 and 50^20.

20^50*50^20= (2^2*50)^50 * (5^2 * 2)^20=2^120 *5^90=(2^90*5^90)*2^30

Therefore, there are 90 pairs of 2's and 5's here. So your answer is 90 cyphers.

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