Question

a=1 and sum of r and z term is 90​

Answer 1

Answer:

we have,

a(r) + a(z) = 90

a + (r-1)d + a + (z-1)d = 90

d(r+z-2) = 88

as we have three variables and only 1 equation,

so assuming, d = a = 1

then we have,

r + z = 90

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