Syntel
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Numerical Ability
LCM and HCF
There are 5 consecutive natural numberswith LCM as 60. The product of the first two numbers is equal to the 5th number. What is the sum of the 5 numbers?
1. 0
2. 19
3. 20
4. 25
Read Solution (Total 2)
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- the five consecutive numbers are x,x+1,x+2,x+3,x+4
given that product of first and second number is 5thnumber
i.e x(x+1)=x+4
x^2+x=x+4
x^2=4
x=2
then the 5 consecutive numbers are 2,3,4,5,6 and the lcm is 60
sum of this numbers is 20 - 11 years agoHelpfull: Yes(13) No(0)
- numbers are 2,3,4,5,6 and 2*3=6 and LCM is 60
- 10 years agoHelpfull: Yes(1) No(0)
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