Question

number series 215,19,163,63,?

Answer 1

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215,19,163,63,127

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Answer 2

Answer:

127

Step-by-step explanation:

The given sequence is

215,19,163,63,?

We need to find the missing number.

$215-(14)^2=215-196=19$             (Subtract 14²)

$19+(12)^2=19+144=163$             (Add 12²)

$163-(10)^2=163-100=63$             (Subtract 10²)

Using similar pattern, we need to add 8² and 63 to get the missing term.

$63+(8)^2=63+64=127$             (Add 8²)

Therefore the missing number is 127.