Question

If the numbers a, b, c are in A.P then we must have
A
2b = a + c
B
2a = b + c
C
2c = a + b
D
None​

Answer 1

(A). 2b=a+c. is the correct answer

Answer 2

$If \:the \:numbers\: a,\: b, \:c \:are\: in\: A.P$

$\implies b - a = c - b$

$\blue { ( Difference \:of \: consecutive \:terms )}$

$\implies 2b = a + c$

Therefore.,

$Option \: \pink { (A) } \:is \: correct.$

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