Question

7consecutive number average is 20 what is the smallest number

Answer 1

7 consecutive no. average is 20..
So,(x + x+ 1 + x + 2 +.......+x+6)/7 = 20
As we can see there are 7 x and 1+2+3+...+6,
Therefore, (7x+21)=20*7
or x=17
So smallest no. is 17