Answer: Option C

Explanation:

Since each day of week is repeated after 7 days.

After 133 days,it will be thursday.

So one day before that would be Wednesday.

(A+B) - (B+C) = 12

A - C = 12.

C is younger than A by 12 years.

Let Kamlesh?s speed be x km/hr.

Then, `40/x - 40/(2x) = 4`

8x = 40

x = 5 km/hr

In each number except 427, middle digit is sum of or two.

Older ratio = 6:1

Newer ratio = 10:3

Let 2 years ago ages of B and A were x and 6x respectively.

`[ (6x+8)/ (x+8)] = 10/3`

`18x +24 = 10x + 80`

`8x = 56`

 `x=7 years`

Therefore , 2 years ago , A?s age was 6 * 7 = 42 years

Therefore, A?s present age = 42 + 2 = 44

It is given that last three digits are randomly dialled. Then each of digit can be selected out of 10 digits in 10 ways.

Hence required probability

= `1/10 * 1/10 * 1/10`

= `1/1000`

Sum of present ages of A, B and C is = 92 years

Therefore , Sum of ir ages 4 years ago = 92 ? (4 * 3)= 80 years.

4 years ago ratio of ages of A , B and C was = 1:2:3

Therefore, A?s age four years ago = `1/6` * 80 = 13.3 years.

So , A?s present age =13.3 + 4 = 17.3 years

For x=2, 3(2)+ 12 = 0

6+12=18 so 18<18 is not possible since 18=18 and hence inequality fails

Let Sobha's age = x and her bror's age = x-4

Sobha's far's age = x + 38
Sobha's mor's age = (x - 4) + 36
=> Sobha's far's age - Sobha's mor's age
= (x + 38) ? [(x - 4) + 36]
= x + 38 ? x + 4 ? 36
= 6

We know,

`Profit % = ((Selli ng Price - Cost Price))/(Cost Price) * 100`

`=>25 = ((500-x))/(x)*100`

=> 125x = 50000

=> x = 400