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Question

Find a pattern for these sequences:

a = 1, 2, 3, 4...

b = 0, 2, 4, 6, 8...

c = 1, 3, 5, 7...


A

a = 2n; b=n + 1; c=2n + 1

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B

a = n + 1 ;b = 2n;c = 2n + 1

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C

a = 2n + 1;b = n + 1;c = 2n

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D

a = 2n; b = 2n + 1;c = n + 1

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Solution

The correct option is B

a = n + 1 ;b = 2n;c = 2n + 1


For sequence a, we have a pattern of (n +1) where n is the whole number.

Ex = let n = 0, then we have

a = n + 1

= 0 + 1

= 1

For sequence b, we have pattern of 2n which is pattern for even number where 'n' is whole number

Ex= For the value of n = 0

b = 2n

= 2 × 0

= 0

For sequence c, we have pattern of 2n + 1 which is pattern for odd numbers.

c = 2n + 1

= 2 × 0 + 1

= 1


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