Question

Exercise 12 (A)
1. Look at the pattern and fill in the blanks.
(a) 1 + 3 + 5 + 7 + = 25
(b) 1 + 3 + 5 + 7 + 9 + 11 + + 15 = 64
(c)1 + 3 + 5+ 7 + 9 + 11 + 13 + 15 + 17 + 19 = ​

Answer 1

Answer:

the given pattern is in the form of odd numbers

hence by adding the next odd number at last of sequence will gives the answer

1+3+5+7+ 9 = 25 here 9 is added as it is the next odd number

similarly

1 + 3 + 5+ 7 + 9 + 11 + 13 + 15 + 17 + 19 + 21 = 121

here 21 is added as it is the next odd number