plz solve this question
Attachments:

Answers
Answered by
0
1) If the last digit is 5 and the before digit is x
Then the last digits of the result will be 5 square (i.e, 25)
And the before digits will be x*(x+1)
For example
25 ^2 =2*(2+1)
=2*3
=6
5^2=25
So ,25^2=625
2) first root the last 2 digits
Then factories the before digits
For example, 1225
Root 25=5
Find the Factors 12=1*12
2*6
3*4
Now the last factor is 4
So divide 12 by 4 = 3
Then root of 1225 is 35
Similar questions