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Let S={(a,b): a,binZ,0lea,ble18} . The n...

Let `S={(a,b): a,binZ,0lea,ble18}` . The number of elements (x ,y) in Such that 3x+4y+5 is divisible by 19 is

A

38

B

19

C

18

D

1

Text Solution

Verified by Experts

The correct Answer is:
B
3x+4y+5=19 I
`5le(3x+4y+5)le131`
`5le191le131`

Total Solution =19
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