If S = 1! 2! 3! ... 99! , then the units' digit in the value of S is : (a) 9 (b) 8 (c) 5 (d) 3
Answers
Answered by
0
B. As there are plenty of even numbers in the multiplication. And multiplication of even number with an odd or even number is always even. Answer is b)8
veer121208ot1bcb:
But the actual answer is 3 and I want to know how it came.
dude
I'll still go with the second one
Similar questions