Value of 'a' ? if 's' is an acute angle and `PR||QT.`

Answer

A

Explanation

For Quantity `I to`
Let required no. `=10x+y`
`therefore 10y+x=10x+y+36`
`9y-9x=36`
`y-x=4`
`therefore` unit digit of the no. should be 4 more than the ten's digit of the number.
`therefore` such possible numbers from 1 to 63 are `=04,15,26,37,48,59`
`therefore` Required probability `=6/63`
For quantity II `to`
Possible numbers from 1 to `63=8,24,40,56` Required probability `=4/63`
`therefore` Quantity `I gt` Quantity II