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Quantitative Aptitude0%

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Review

Question 1 of 10

1. Question

1 points

Category: Quantitative Aptitude

Q. (1-5) What should in place of questions mark (?) in the questions given below?

(√44944+√52441)^{1/2}

Correct

Incorrect

Question 2 of 10

2. Question

1 points

Category: Quantitative Aptitude

Q. (1-5) What should in place of questions mark (?) in the questions given below?

16.5% of 300 + 70.5% of 1400 – 10% of 480 = ?

Correct

Explanation

49.5+987-48=?
? = 988.5

Incorrect

Explanation

49.5+987-48=?
? = 988.5

Question 3 of 10

3. Question

1 points

Category: Quantitative Aptitude

Q. (1-5) What should in place of questions mark (?) in the questions given below?

(1.6)^{8} x (2.56)^{4} ÷ (4.096)^{3} = (1.6)^{?}

Correct

explanation

In case of multiplication power added but in case of division power subtracted
1.6)^{8} x (2.56)^{4} ÷ (4.096)^{3} = (1.6)^{? }
1.68+8-9 —> 1.616-9
= 1.6^{7}, so answers is 7

Incorrect

explanation

In case of multiplication power added but in case of division power subtracted
1.6)^{8} x (2.56)^{4} ÷ (4.096)^{3} = (1.6)^{? }
1.68+8-9 —> 1.616-9
= 1.6^{7}, so answers is 7

Question 4 of 10

4. Question

1 points

Category: Quantitative Aptitude

Q. (1-5) What should in place of questions mark (?) in the questions given below?

A student find the average of ten 2 digits numbers. While copying numbers, by mistake, he writes one number with its digits interchanged. As a result, his answer is 18 less than the correct answer. The difference of the digits of the number, in which he made mistake is:

Correct

Explanation
Let the original number 10p+q
10p+q –(10q+p) =18
p-q= 2

Incorrect

Explanation
Let the original number 10p+q
10p+q –(10q+p) =18
p-q= 2

Question 7 of 10

7. Question

1 points

Category: Quantitative Aptitude

A and B together can complete a task in 20 days. B and C together can complete the same task in 30 days. A and C together can complete the same work in 40 days. What is the respective ratio of the number of days taken by A when completing the same task alone to the number of days taken by C when completing the same task alone?

Correct

Incorrect

Question 8 of 10

8. Question

1 points

Category: Quantitative Aptitude

There were 46 students in a Boys hostel. Due to the admission of eight new students the expenses of the hostel mess were increased by Rs.42 per day while the average expenditure per head diminished by Rs 1. What was the original expenditure of the hostel mess?

Correct

Explanation
54*(x−1) −46*x = 42
8x = 96
x = 12
Original total expenditure:
46*x = 46*12 = Rs 552

Incorrect

Explanation
54*(x−1) −46*x = 42
8x = 96
x = 12
Original total expenditure:
46*x = 46*12 = Rs 552

Question 9 of 10

9. Question

1 points

Category: Quantitative Aptitude

10 cylindrical pillars of a building have to be painted. The diameter of each pillar is 70 cm and the height is 4m. What is the cost of painting at the rate of Rs. 10 per square meter?

Working together Bala and Chitra take 50% more number of days than Angel, Bala and Chitra together take and Angel and Bala working together, take 8/3 more number of days than Angel, Bala and Chitra take together. If Angel, Bala and Chitra all have worked together till the completion of the work and Bala has received Rs.120 out of total earnings of Rs. 480 then in how many days did Angel, Bala and Chitra together complete the whole work?

Correct

Explanation
The days ratio of (Angel + Bala + Chitra): (Bala + Chitra) = X:3X/2 = 2X:3x;
Efficiency ratio = 3X:2X
Efficiency of Angel = x.
(480/3X) = Rs.160
Amount received by Bala = Rs.120 & Chitra = 200
160:120:200 =4:3:5
1/4:1/3:1/5= 15:20:12;
Days ratio are 15: 20:12, Let days are 15x, 20x, 12x respectively for angel, Bala, Chitra

Incorrect

Explanation
The days ratio of (Angel + Bala + Chitra): (Bala + Chitra) = X:3X/2 = 2X:3x;
Efficiency ratio = 3X:2X
Efficiency of Angel = x.
(480/3X) = Rs.160
Amount received by Bala = Rs.120 & Chitra = 200
160:120:200 =4:3:5
1/4:1/3:1/5= 15:20:12;
Days ratio are 15: 20:12, Let days are 15x, 20x, 12x respectively for angel, Bala, Chitra