help me pls's answer to shasha's Secondary 2 Maths Singapore question.

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help me pls
Help Me Pls's answer
2 answers (A Helpful Person)
1st
no. of squares in diagram n: 2n+2
no. of squares in diagram 50: 2(50)+2
= 100+2
= 102
therefore, there are 102 squares in diagram 50