**Option E: is 2^124 factor of 4*50!**

Doesn’t 50! contain 47 twos, and add two twos from 4. so 4*50! has only 49 twos.

So D and E both are correct options

Doesn’t 50! contain 47 twos, and add two twos from 4. so 4*50! has only 49 twos.

So D and E both are correct options

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That’s not the question though?

what do you mean

The question is about the product of the first 50 multiples of 4, which is not 4 \times 50!.

product of first 50 positive multiples of 4

= (4* 1) * (4 * 2) * (4* 3) * … * (4* 50)

= 4^50 *( 1 *2 *3 * … 50)

My bad it should be **4^50 * 50!**