Triangular and Square pattern

Front

What are triangular numbers?

Back

The numbers whose dot pattern can be arranged in triangles

Front

Which of the following is a triangular number? Options: 2, 3, 4, 5

Back

3

Front

If we combine any two consecutive triangular numbers, we get?

Back

Square Number

Front

How many non-squares numbers are there between 4² & 5²?

Back

8

Front

If we add first n numbers, we will get ______

Back

n(n+1)/2

Front

Which number is both a triangular number and a square number? Options: 10, 25, 36, 49

Back

36

Front

In the pattern below which number comes next? 1, 3, 6, 10, 15, …

Back

21

Front

The following pattern shows a triangular number, what will be the next number? …..120, 136, 153, 171, ….

Back

190

Answer explanation

171 - 153 = 18

so 171 +(18+1)

171 + 19

190

Front

What triangular number is before 120 in the pattern: …..120, 136, 153,171, ….?

Back

105

Front

What kind of numbers would you get if you subtract any two consecutive square numbers?

Back

Odd number

Answer explanation

consecutive square numbers are 1 ad 4, 4 and 9, 9 and 16, 16 and 25

so difference

4-1 = 3

9-4=5

16-9=7

25-16=9

therefore numbers are odd