Ques 1 Number System
Find the number of trailing zero in 125!.?
a) 20
b) 24
c) 27
d) 31
125!=(125⁄5)+(125⁄25)+(125⁄125)+(125⁄625).125!=25+5+1+0.125!=31.Ques 2 Number System
If the 11 digit number 4y6884805x6 is divisible by 72, and x ≠y , then the value of √xy is
a) √2
b) √6
c) √23
d) √22
Ques 3 Number System
When a number is divided by 3, the remainder is 2. Again, when the quotient is divided by 7, the remainder is 5. What will be the remainder when the original number is divided by 21?
a) 17
b) 18
c) 19
d) 20
Ques 4 Number System
If the nine-digit number 259876p05 is completely divisible by 11, then what is the value of (p2 + 5) ?
a) 27
b) 32
c) 42
d) 52
Ques 5 Number System
When a number is divided by 56, the remainder obtained is 29. What will be the remainder when the number is divided by 8.?
a) 5
b) 8
c) 0
d) 7
Ques 6 Number System
The digits of a two-digit number are in the ratio of 2: 3 and the number obtained by interchanging the digits is bigger than the original number by 27. What is the original number.?
a) 53
b) 34
c) 69
d) 72
Ques 7 Number System
Find the unit place digit in 71 x 72 x 73 x 74 x 76 x 77 x 78 x 79.?
a) 2
b) 4
c) 6
d) 8
Ques 8 Number System
If the unit digit of ( 433 × 456 × 43N ) is ( N + 2 ) , then what is the value of N.?
a) 2
b) 4
c) 6
d) 8