Question

1. on combining two consecutive triangular mumber,we get a _______
2.if a number has digit ______ in units place , then it's square ends with 1
3.square of ________ number can be expressed as sum of 2 consecutive natural number

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Answer 1

Answer:

(1) square number,(2)1 and 9,(3)natural number

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Answer 2

Answer:

1. On combining two consecutive triangle number we get a Square number .