What number will replace the ?
$1, 9, 17, 33, 49, 73, ?$

97

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98

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99

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100

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Solution

The correct option is A $97$
The series is $+ 8, + 8, + 16, + 16, + 24.........$ .
$x - 73 = 24$
$x = 97$
So,option A is the correct answer.

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3, 15, ?, 63, 99, 143

Wages (₹)	:	100	101	103	102	100	99	97	98	96	95
Cost of living	:	98	99	99	97	95	92	95	94	90	91

100^{1} \times 99^{2} \times 98^{3} \times 97^{4} \times \dots 1^{100}

100^{2} - 99^{2} + 98^{2} - 97^{2} + 96^{2} + 95^{2} + . . . . = S

S = ?

100^{2} - 99^{2} + 98^{2} - 97^{2} . . . . . . . . . - 3^{2} + 2^{2} - 1^{2}

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