(Q). Given that k = 1! + 2! + 3! + 4! +5! + ……….. + 120!. Then which one of the following is true (i) k is odd (ii) k is even (iii) k is even or odd, can not be determined (iv) (k+3) is even. Solution:- Since 1! = 1 & all factorials...
(Q). k is the product of first 100 multiples of 15. Find the number of trailing zeros in k.Solution:- k = (15×1).(15×2).(15×3)…………(15×100)k = 15¹⁰⁰ × 100!now highest power of 5 in...
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