11.
How many such pairs of letters are there in the word SENDING, each of which has as many letters between its two letters as there are between them in the English alphabets?

12.
A lad was asked his age by his friend . The lad said, "The number you get when you subtract 25 times my age from twice the square of my age will be thrice your age". If the friend's age is 14, then the age of the lad is :

13.
A Parking lot Contains 160 Vehicles. Each Vehicle is either a car or a truck, and each vehicle is either red or green. 70 vehicles are red, and 120 vehicles are cars. If there are 18 green trucks, how many red cars are there?

14.
Grass in lawn grows equally thick and in a uniform rate. It takes 24 days for 70 cows and 60 days for 30 cows to eat the whole of the grass. How many cows are needed to eat the grass in 96 days?

15.
Mohan is older than Prabir. Suresh is younger than Prabir. Mihir is older than Suresh, but younger than Prabir. Who among the four is youngest?

16.
A man is 24 years, older than his son. In two years, his age will be twice the age of his son. The present age of his son is

17.
A family went for a vacation. Unfortunately, it rained daily for 13 days when they were there. But whenever it rained in the mornings, they had clear afternoons and vice versa. In all, they enjoyed 11 mornings and 12 afternoons. How many days in all did they stay there?

18.
M scores more run than N but less than P. Q scores more than N but less than M. Who is the lowest scorer?

19.
Harish sits on the right of Satish. Satish sits between Manish and Girish. Who sits farthest to the right?

20.
If we substitute 1 to 24 indicating hours on the dial of a clock day and night by the letters of the English alphabet their order starting with C which letter will represent 16 hours?