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What is the digit at 10 th place (2)1!+2!+3!+…………………………….+68!.
(a)0 (b)1 (c)5 (d) 7
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b. 2+2!+3!=10
11 years ago
Helpfull: Yes(0) No(1)
TCS Other Question
98,50,26,14,8,__
3.What is
k=28
∑k^2(28Ck)
k=0
, where 28CK
is the number of ways of choosing k items from 28
items?
a.406 *2^27
b.306 *2^26
c.28 *2^27
d.56 *2^27