Math, asked by kr679561, 10 months ago

which of the following is not tringalur number

Answers

Answered by okrr1966

0

Answer:

1,3,6,21,28

Step-by-step explanation:

the 1st triangular has just one dot.

the 2nd triangle has another row with 2 extra dots ,making 1+2 =3.

and same 3 triangle also had another row with 3 extra dots making 3+3=6.

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