What is the result of the sum 1+3+5+7+9+ ..... +15?
A) 121
B) 81
C) 100
D) 64
Correct Answer: D
Solution :
From 1 to 15 there are 8 odd numbers. So, \[1\text{ }+3+5+7+....+\text{ }15\]\[=\text{ }8\text{ }\times \text{ }8\text{ }=\text{ }64\]
You need to login to perform this action.
You will be redirected in
3 sec
