Mathematical Ability Test-7

Result

Mathematical Ability Test-7

Score
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Rank
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TIME Taken - -

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Weekly Quiz Competition

Question 1
1 / -0

'A' and 'B' complete a work in 12 days. 'B' and 'C' in 8 days and 'C' and 'A' in 16 days. 'A' left after working for 3 days. In how many days more will 'B' and 'C' finish the remaining work?

A

B

C

D
Question 2
1 / -0

What will come in the place of question mark (?).

A
8.5

B
13

C
16

D
17.5

Solution
Question 3
1 / -0

The LCM of two prime numbers x and y (x > y) is 161. Find the value of 3y - x.

A
-1

B
1

C
2

D
-2

Solution

Given-

The LCM of two prime numbers x and y (x > y) is 161.

LCM of two prime numbers is always equal to their product.

⇒ x × y = 161

⇒ x × y = 23 × 7

On comparing we get,

⇒ x = 23, y = 7

3y - x

⇒ (3 × 7) - 23

⇒ 21 - 23

⇒ -2
Question 4
1 / -0

If tan ⁡θ = 1/2 and tan⁡ φ = 1/3, then what is the value of (θ + φ)?

A
0

B
π/6

C
π/4

D
π/2

Solution
Question 5
1 / -0

The absolute mean deviation about mean is:

A
Dependent of change of origin

B
Independent of change of origin

C
Both (A) and (B)

D
None of the above

Solution
Question 6
1 / -0

Payal walks in a square garden ABCD. She doesn't know the distance between 2 consecutive points. But she knows the distance between point A) and point C is 90√2 m. Find the perimeter of the garden.

A
300 m

B
360 m

C
260 m

D
120 m

Solution

Given:

Diagonal (AC) = 90√2 m

Diagonal of square = 90√2 Side

The perimeter of square = 4 × Side

Diagonal of square = Distance between A and C

Diagonal of square = √2× Side

⇒90√2 m = √2× Side

⇒ Side = 90 m

The perimeter of square = 4 × Side

⇒ The perimeter of square = 4 × 90 m

⇒ The perimeter of square = 360 m

∴ The perimeter of the garden is 360 m
Question 7
1 / -0

In a race of 1500 meters, Vinay beats Pratap by T seconds or 300 meters. If the speed of Vinay is 12.5 m/s then find the value of T?

A
20

B
45

C
30

D
40

Solution
Question 8
1 / -0

A

B

C

D

Solution
Question 9
1 / -0

If the group (z, ∗) of all integers, where a ∗ b = a + b + 1 for all a, b ∈ z, the inverse of −2 is:

A
-2

B
0

C
-4

D
2

Solution
Question 10
1 / -0

A

B

C

D

Solution