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Cryptography
Find the smallest number which divides 2880 gives perfect square ?
Read Solution (Total 12)
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- 2880=2*2*2*2*2*2*3*3*5=2^6*3^2*5
so if we divide 2880 by 5, then no. will be perfect square
ans 5 - 11 years agoHelpfull: Yes(69) No(0)
- Ans is 5
prime factors of 2880=2*2*2*2*2*2*3*3*5
Except 5 both numbers are in pair.
verify - 2880/5=576 'square root of 576 is 24 - 11 years agoHelpfull: Yes(16) No(0)
- ans is 5..
2880/5= 576
24*24 =576 - 11 years agoHelpfull: Yes(2) No(0)
- 2880=144*20=144*4*5
=>5 - 10 years agoHelpfull: Yes(2) No(0)
- 2880/5=576
24*24=576
- 11 years agoHelpfull: Yes(1) No(0)
- ans:5
2880/5=576 which is a square of 24... - 11 years agoHelpfull: Yes(1) No(0)
- for any no to be a perfect square its last digits should be ended up with
even zeroes
even ones
even 4
even 9
odd 6 and
25
so if we divide the no. with 5 then the last digit of the quotient is single 6 hence the smallest no. is 5
- 11 years agoHelpfull: Yes(1) No(0)
- 4....... as it is the smallest possible digit divisible and perfect square
- 11 years agoHelpfull: Yes(0) No(7)
- 2800= 2^6*3^2*5..hence 5 is the ans.
- 10 years agoHelpfull: Yes(0) No(0)
- The smallest number is 5
when 2880 divides by 5 we get quotient as 576
576 is a perfect square 24^2=576 - 10 years agoHelpfull: Yes(0) No(0)
- 2880/5=576
- 10 years agoHelpfull: Yes(0) No(1)
- any one ..
plz give clear explanation.............................. - 9 years agoHelpfull: Yes(0) No(0)
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