Question

find the unit digit in the first 50 odd numbers

Answer 1

Hi ,

1 , 3 , 5 , 7 , ...... , 99 are first 50 odd

natural numbers.

Product of these numbers =

( 1 × 3 × 5 × 7 × .....× 99 )

= 5 × ( 3 × 7 × 9 × .....× 99 )

= 5 × odd number

= Odd number whose unit digit is 5

Therefore ,

Unit digit of first 50 odd natural

numbers is 5.

I hope this helps you.

: )

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