Math, asked by kahandave7, 1 year ago

Q1 mcq pls thank you

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Answered by arshbbcommander
2

a7 = a + 6d= 34

a13= a +12d=64

subtracting eqns -6d= -30

d = 5

a = 34 - 6 ×5 = 34-30 = 4

a18 = 4 + 17×5

a18 = 89

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