Question 11 MarkSquare numbers are the sum of two consecutive triangular numbers.AnswerSelfView full question & answer→
Question 21 Mark$16$ is a square number because $16$ objects can be arranged in an array of $4 \times 4.$AnswerSelfView full question & answer→
Question 41 Mark$36$ is a triangular as well as a square number but $1$ is not such a number.AnswerSelfView full question & answer→
Question 51 Mark$1$ is the only square number, that is, not composite.AnswerSelfView full question & answer→