Question

find value of (i)power30+(i)power40+(i)power60
$find x and y if{x + 7and8} = {10andx + y}$

Answer 1

(i)p 30 + (i)p40 +(i)p60

= -1 + 1 + 1

= 2-1

=1
Note :(i)p4= 1 so multiple of 4 is 1...