Mental Ability MCQs

Maths Questions with solutions MCQs

1. Producers' total revenue will decrease if

A

the price rises and demand is elastic

B

income increases and the good is a normal good

C

the price falls and demand is elastic

D

income falls and the good is an inferior good.

Maths Statistical Assistant 2025
Correct Answer : A
Explanation :

the price rises and demand is elastic<span></span>

Correct Answered :

Wrong Answered :

2. The solution of y` + y=x+ 1 + e* will be

A

y = Ce⁻⁵ˣ+4 x

B

y = 2Ce⁻⁴ˣ + x - 1

C

y = Ce⁻²ˣ + 2x + 5

D

y = Ce* + x

Maths Statistical Assistant 2025
Correct Answer : D
Explanation :

<em data-start="1063" data-end="1082"><em data-start="1064" data-end="1077">y = C e^</em> + x</em>*<span></span>

Correct Answered :

Wrong Answered :

3. Which ofthe following differential equations is NOT exact?

A

(y²-x)dx+(2xy)dy=0

B

(x²+y²)dx+(2xy)dy= 0

C

(2xy+y²)dx+(x²+2xy)dy=0

D

(3x²-y)dx+(3y²-x²)dy=0

Maths Statistical Assistant 2025
Correct Answer : D
Explanation :

(3x² - y)dx + (3y² - x²)dy = 0<span></span>

Correct Answered :

Wrong Answered :

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