Aptitude Test-1

1.  

Square Root : Finding the square root of a number by estimating and multiplying can be a long procedure. Given below is a simpler method to find the square root of a number:

Example: Find the square root of 2116

To find the square root of 2116:

Step 1: See the digit at one’s place. In this case, it is 6. Now, check between 1-9, the square of what all numbers have “6” at one’s place. The answer is 4= 16 and 62 = 36

Step 2: Now check, the square of which number between 1 to 9 is closest to the first two digits of the given number. In this case, the sum of which number between 1 to 9 is closest to 21. The answer is 42 = 16 and 52 = 25

So, one number among 44, 46, 54 and 56 is the square root of 2116

Step 3: The two numbers you got in step 2, multiply each of them with the next number in the number series. That is, 4×5 = 20 and 5×6 = 30. Since 20 is a closer number to 21. The answer has to be either 46 or 44. Multiply and check your answer.

What is the square root of 1024? 

Question 1 of 10

2.  

Cube Root : Follow the steps given below to quickly find out the cube root of a number.

Example: What is the cube root of 9261

Step 1: Find the numbers between 1 to 9 whose cube is equal to the digit present at the one’s place, here it is 1. So, we get 1×1×1 = 1

Step 2: See the first digit of the number, in this case, 9. 9 lies between the cube of 2 (2×2×2=8) and (3×3×3 = 27). Since 8 is closest to 9. Cube root of 9261 is 21.

Note: To find the cube root of 5 digit number, use the first two digits instead of the first digit in step 2

Try one example by yourself to understand the trick even better:

What is the cube root of 32768 ?

 

Question 2 of 10

3.  

Refer to the alphanumeric series given below and answer the following questions:

A * 5 9 I N & E @ # U 1 &

How many vowels in the above arrangement are preceded by a symbol?

Question 3 of 10

4.  

Refer to the alphanumeric series given below and answer the following questions:

A * 5 9 I N & E @ # U 1 &

Which is the second element to the left of the sixth element from the right?

Question 4 of 10

5.  

ABD, EFH, IJL, MNP, QRT , ???

  1. XYZ
  2. VWY
  3. WXZ
  4. UVX
  5. XZA

Question 5 of 10

6.  

ACE,  ???,  MOQ,  SUW

  1. GIK
  2. FHJ
  3. GHJ
  4. GIL
  5. EFH

Question 6 of 10

7.

435 , 224, 786,  823, 902

When all the digits in each of the given numbers are arranged in ascending order, which number becomes the highest?

  1. 435
  2. 224
  3. 786
  4. 823
  5. 902

Question 7 of 10

8.  

Pointing to a photograph of a boy Mr.Ram said, “He is the son of the only son of my mother.” How is Mr Ram related to that boy?

A. Brother

B. Uncle

C. Cousin

D. Father

Question 8 of 10

9.  

 What is the probability that Ram will choose a marble at random and that it is not black if the bowl contains 3 red, 2 black and 5 green marbles.

Question 9 of 10

10.  

Cost of two types of pulses is 15 and  20 per kg, respectively. If both the pulses are mixed together in the ratio 2:3, then what should be the price of mixed variety of pulses per kg?

  1. 22 per kg
  2. 30 per kg
  3. 10 per kg
  4. 18 per kg
  5. 24 per kg

Question 10 of 10