Find the 10th term:-
1,3,6,10,15,21,…

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A 57
B 55
C 54
D 56

Show answer and explanation

Answer: B. 55

The pattern is triangular numbers which we get by adding continuous numbers.
An easy formula is n(n+1)
________.

2

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Find the 10th term:- 1,3,6,10,15,21,…

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Find the 10th term:-
1,3,6,10,15,21,…