Question

(Q)Look at the number pattern given below

1

2 3

4 5 6

7 8 9 10

......................................

..................................................

a) Write the next two more line of this pattern?

b) How many numbers are there in the 9th line?

c) What is the last number in the 10th line?

d) What is the sum of the numbers in the 10th line?​

Answer 1

Answer:

a) 11 12 13 14 15

16 17 18 19 20 21

b) 9 numbers are there in 9th

line.

c) 55 is last number in 10th line.

d) 505 is the sum of the

numbers in the 10th line.