Exam
Maths Puzzle
Numerical Ability
5^2010*8^673
sum of digits=....
Read Solution (Total 3)
-
- 5^2010*8^673
= (5^3)^670 * 8^670 * 8^3
= (5^3 * 8)^670 * 512
= 512 * 1000^670
= 51200000000000000000000(2010 zeroes)
=> sum of digits = 5+1+2 = 8 - 9 years agoHelpfull: Yes(5) No(2)
- 5^2010 * 8^673 (2^3=8) therefore 673*3=2019
=5^2010 * 2^2019
=10^2010 * 2^9 (2^9=512)
=10^2010 * 512= 512000..... upto 2010 zeroes.So the sum is 8. - 9 years agoHelpfull: Yes(1) No(0)
- ans is 8.(512000......0)
- 9 years agoHelpfull: Yes(0) No(0)
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