Solution
First 7 multiples of 7 = 7,14,21,28,35,42,49
=> Sum = $$7(1+2+3+4+5+6+7)=7\times28$$
=> Average = $$\frac{7\times28}{7}=28$$
=> Ans - (D)
Create a FREE account and get:
- Free SSC Study Material - 18000 Questions
- 230+ SSC previous papers with solutions PDF
- 100+ SSC Online Tests for Free
