TCS Ninja Numerical Ability
Question 1
Answer
Question 1
The LCM and HCF of the three numbers 48, 144, and p are 720 and 24 respectively, find the least value of p.
A) 192
B) 120
C) 360
D) 180
Answer
B) 120
Question 2
Answer
Question 2
What value should came in the place of question mark(?) in the following equation?
8 / [2 x 2 – {14 + (2 / 4 x 4) – 13}] = 3/4 + ?
A) 2
B) 1/4
C) 29/4
D) 5/16
Answer
C) 29/4
Question 3
Answer
Question 3
Simplify and find the value
0.0217 x 3.18
——————–
0.0053 x 15.5 x 0.7
A) 1.2
B) 0.12
C) 12
D) 0.012
Answer
A) 1.2
Question 4
Answer
Question 4
Simplify and find the value,
216 x 216 + 216 x 194 + 194 x 194
216 x 216 x 216 – 194 x 194 x 194
A. 1/11
B. 2/11
C. 1/22
D. 1/33
Answer
C. 1/22
Question 5
Answer
Question 5
Boy scored 90 marks in his mid-term exam and 105 in his end-term exam. If the maximum marks in both the examinations are 150, then find the increase in his marks in percentage points.
A. 10%
B. 15%
C. 14.28%
D. 16.66%
Answer
A. 10%
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Question 6
Answer
Question 6
Plant A of a factory, during audit 6% of parts got rejected from the total production. In Plant B, the same number of parts were rejected with 96 units of parts rejected less than Plant A. What was the number of parts produced by each factory?
A. 4800
B. 10000
C. 9600
D. 7200
Answer
A. 4800
Question 7
Answer
Question 7
Amounts at the end of 2 yrs and 3 yrs are Rs. 1170 and Rs. 1305 on a certain sum, at a certain rate of simple interest. Find the rate of interest.
A. 12% p.a.
B. 9% p.a.
C. 15% p.a.
D. 18% p.a.
Answer
C. 15% p.a.
Question 8
Answer
Question 8
A shopkeeper marks the sale price of all items in his shop at 20% above the cost price of those items. However, he offers a discount of 15% on the sale price of these items to his customers. Calculate the profit earned by him, in percentage.
A. 5%
B. 2%
C. 10%
D. 2.5%
Answer
B. 2%
Question 9
Answer
Question 9
R and company has two directors, X and Y who have invested Rs. 1,25,000 and 1,00,000 respectively. X is the working partner and hence takes 5% of the profit as his salary. Find X’s share of the profit, if their annual profit is Rs. 72,000.
A. 40,000
B. 32,000
C. 38,000
D. 42,000
Answer
C. 38,000
Question 10
Answer
Question 10
In a certain amount, compound interest at the rate of 12.5% per annum for the fifth year 2048. If the interest is compounded annually. What is the compound interest for the 8th year?
A. $ 2592
B. $ 2304
C. $ 2916
D. $ 3280
Answer
C. $ 2916
Question 11
Answer
Question 11
Two taps A and B fill an empty tank in 40 mins and 60 mins respectively. If both the taps are opened at 5 am, then at what time A be closed so that the tank is filled in 36 mins?
A. 5.22 am
B. 5.12 am
C. 5.16 am
D. 5.05 am
Answer
C. 5.16 am
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Question 12
Answer
Question 12
Two numbers having their LCM 480 are in a ratio 3 : 4. What will be the smaller number of this pair?
A. 180
B. 120
C. 160
D. 240
Answer
B. 120
Question 13
Answer
Question 13
Quantity of wine in a mixture (wine + water + soda) is 24 ml more than water and 40 ml less than soda.
When 20% mixture is replaced by water, the total quantity of water in the mixture becomes 208 ml. What is the initial quantity of wine in the mixture?
A. 180 ml
B. 120 ml
C. 160 ml
D. 140 ml
Answer
C. 160 ml
Question 14
Answer
Question 14
A box contains a total of 45 coins of one rupee, five rupees and two rupees. The total value of all the coins in the box is Rs. 91. The number of one rupee coin is one more than the total number of 5 rupees and two rupees coins. What is the number of five rupees coins in the box?
A. 12
B. 8
C. 6
D. 10
Answer
B. 8
Question 15
Answer
Question 15
6 men together can complete a one-third of work in 12 days. Four women together can complete half of the same work in 27 days and nine boys together can complete three-fourth of the same work in 54 days. In how many days can three men, 2 women and 3 boys together complete the work?
A. 30 days
B. 36 days
C. 24 days
D. 45 days
Answer
B. 36 days
Question 16
Answer
Question 16
Akshat’s walking speed is 5 km/h. The bus stop is 1 kilometre away from his house. Akshat walks to the bus stop and then takes a bus to school. The speed of the bus is 40 Km/h. Akshat’s school is 10 Kilometers away from the bus stop. How much time will Akshat take to reach his school form his house, if he boards a bus as soon as he reaches the bus stop?
A. 20 minute
B. 34 minutes
C. 27 minutes
D. 30 minutes
Answer
C. 27 minutes
Question 17
Answer
Question 17
A magician wants to hide his magical rod inside a cubical box whose total surface area is 3042 cm2. What can be the maximum length of the rod?
A. 37 cm
B. 42 cm
C. 33 cm
D. 39 cm
Answer
D. 39 cm
Question 18
Answer
Question 18
A park is square in shape with its perimeter four times the perimeter of a rectangle having length 15 metres and breadth 10 metres. There is a semi-circular lawn inside the park that has a diameter equal to the side of the square. Calculate the perimeter of this lawn.(Take n = 3.14).
A. 140 metres
B. 50 metres
C. 128.5 metres
D. 125.5 metres
Answer
C. 128.5 metres
Question 19
Answer
Question 19
The average of 13 consecutive natural numbers in x. If the seventh number is 22, find x.
A. 20
B. 22
C. 28
D. 14
Answer
B. 22
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Question 20
Answer
Question 20
A magician wants to hide his magical rod inside a cubical box whose total surface area is 3042 cm2. What can be the maximum length of the rod?
A. 37 cm
B. 42 cm
C. 33 cm
D. 39 cm
Answer
D. 39 cm
Question 21
Answer
Question 21
The standard deviation of prime numbers between 60 and 80 is 6.72. If each observation is multiplied by the median of the numbers, then find the difference of standard deviations of the obtained observations and median of the numbers.
A. 484.68
B. 412.36
C. 406.12
D. 477.12
Answer
D. 477.12
Question 22
Answer
Question 22
In how many given years is the income of P in a year, more than then the average of the income of P and Q in the same year?
A. 4
B. 2
C. 3
D. 5
Answer
A. 4
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