0! = 11! = 12! = 23! = 64!= 245! = 1206! = 720Hence all factorials greater than or equal to 5 will have 0 at their unit place. so they are not of our use in this...
(Q). If a! + b! + c! +d! +e! +f! +g! +h! is a two digit number then find the maximum value of a.Solution:- For maximum value of a → value of other factorial numbers should be minimum (i.e. 1)Hence b! + c! + d! + e! + f! + g! + h! = 7 1 1 1 ...
Number of Zeroes in the factorial of a number:- Number of zeroes in the factorial of a number will be the highest power of 10 in the factorial. & 10 can be written as 2 × 5 in its prime factor form.& we know that in any factorial power of 2 is always greater...
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