## Solution
(x + 1)! = (x + 1) * x!
(x + 1)!/x! = x + 1
## What the question and answer could be
Which of the following is equal to (x+1)!/x!
Options:
(A) x-1
(B) 1+(1/x)
(C) x+1
(D) 1
(E) x
(C)

## Solution
(80/100) * 40 (4/5) * 25
32 - 20 = 12
## What the question and answer could be
How much is 80% of 40 is greater than 4/5 of 25?
Options:
(A) 29
(B) 776
(C) 66
(D) 12
(E) 99
(D)

## Solution
(555 + 445) * 2 * 110 + 30 = 220000 + 30 = 220030
## What the question and answer could be
A no. when divided by the sum of 555 and 445 gives 2times their difference as quotient & 30 as remainder. Find the no. is?
Options:
(A) 124432
(B) 145366
(C) 157768
(D) 178432
(E) 220030
(E)

## Solution
S = (90 + 60)/2 = 75 kmph
## What the question and answer could be
The speed of a car is 90 km in the first hour and 60 km in the second hour. What is the average speed of the car?
Options:
(A) 228
(B) 75
(C) 299
(D) 267
(E) 312
(B)