TCS
Company
Numerical Ability
Arithmetic
The fundamental theorem of arithmetic states that every natural number greater than 1 can be written as a unique product of prime numbers.now what is the smallest number by which 3380 must be divided in order to make it into a perfect square
option
a) 5
b) 4
c) 8
d) 6
Read Solution (Total 4)
-
- use back solving technique
just divide 3380 with the given options.
divide 3380 by 5 we will get 676 which is a perfect square of 26 - 14 years agoHelpfull: Yes(7) No(0)
- just divide 3380 with the given options.like wise divide 3380 by 5 we will get 576 which is a perfect square
- 14 years agoHelpfull: Yes(3) No(7)
- IF WE apply divisibility test,, then 3380 has 0 in its unit place.... so this no. can only be divided by 5 from the given options,,,
3380/5=676
sqrt(676)=26
thus 676 is a perfect square..
hence 5 is the correct answer... - 12 years agoHelpfull: Yes(1) No(2)
- OPTION A
3380/5=676
WHICH IS PERFECT SQUARE OF 26 - 8 years agoHelpfull: Yes(0) No(0)
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By using 1,2,3,4,5, how many 12 digit no. can be formed which is divisible by 4, repetation of no. is allowed?
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