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Question 981

RRB NTPC 2018• Mathematics• Mathematics

A certain sum of money was invested at simple interest at a certain rate for 6 years. Had it been invested at 3% higher rate, it would have yielded Rs. 900 more. What was the principal invested?

  1. AOption (a)

    Rs.3500

  2. BOption (b)

    Rs.4000

  3. COption (c)

    Rs.4500

  4. DOption (d)

    Rs.5000

View answer & explanation

Correct answer

Answer: (d)D.

Rs.5000

Explanation not yet available.

Question 982

RRB NTPC 2018• Mathematics• Mathematics

From which mineral is radium obtained?

  1. AOption (a)

    Rutile

  2. BOption (b)

    Haematite

  3. COption (c)

    Limestone

  4. DOption (d)

    Pitchblende

View answer & explanation

Correct answer

Answer: (d)D.

Pitchblende

Explanation not yet available.

Question 983

RRB NTPC 2018• Mathematics• Mathematics

Choose the pair which is related in the same way as the words in the first pair from the given choices. BIHAR: PATNA: GUJARAT: ___________

  1. AOption (a)

    GANDHINAGAR

  2. BOption (b)

    JAIPUR

  3. COption (c)

    AHMEDABAD

  4. DOption (d)

    DAMAN

View answer & explanation

Correct answer

Answer: (a)A.

GANDHINAGAR

Explanation not yet available.

Question 984

RRB NTPC 2018• Mathematics• Mathematics

The sum of digits of a two-digit number is 13. When the digits are reversed, the number decreases by 27. Find the changed number.

  1. AOption (a)

    85

  2. BOption (b)

    76

  3. COption (c)

    67

  4. DOption (d)

    58

View answer & explanation

Correct answer

Answer: (d)D.

58

Explanation not yet available.

Question 985

RRB NTPC 2018• Mathematics• Mathematics

What is the mode of the following list of numbers: 72, 74, 75, 76, 75, 74, 73, 75, 73, 71, and 77

  1. AOption (a)

    73

  2. BOption (b)

    74

  3. COption (c)

    75

  4. DOption (d)

    72

View answer & explanation

Correct answer

Answer: (c)C.

75

Explanation not yet available.

Question 986

RRB NTPC 2018• Mathematics• Mathematics

Which of the following Indian states cultivates Saffron?

  1. AOption (a)

    Jammu and Kashmir

  2. BOption (b)

    Uttar Pradesh

  3. COption (c)

    Assam

  4. DOption (d)

    Sikkim

View answer & explanation

Correct answer

Answer: (a)A.

Jammu and Kashmir

Explanation not yet available.

Question 987

RRB NTPC 2018• Mathematics• Mathematics

If '+' means ×, '-' means ÷, '×' means + and compute the value of the expression; 35 - 5 + 6 × 7

  1. AOption (a)

    45

  2. BOption (b)

    49

  3. COption (c)

    55

  4. DOption (d)

    51

View answer & explanation

Correct answer

Answer: (b)B.

49

Explanation not yet available.

Question 988

RRB NTPC 2018• Mathematics• Mathematics

Three numbers are in the ratio of 4:5:7 and their sum is 320. Find the sum of the smallest and the largest of the three numbers.

  1. AOption (a)

    140

  2. BOption (b)

    220

  3. COption (c)

    240

  4. DOption (d)

    180

View answer & explanation

Correct answer

Answer: (b)B.

220

Explanation not yet available.

Question 989

RRB NTPC 2018• Mathematics• Mathematics

Below are given statements followed by some conclusions. You have to take the given statements to be true even if they seem to be at variance with the commonly known facts and then decide which of the given conclusions logically follow(s) from the given statements. Statements: A. Some boys are girls B. All girls are singers. Conclusions: I. Some singers are girls II. Some singers are boys.

  1. AOption (a)

    Only conclusion I follows

  2. BOption (b)

    Only conclusion II follows

  3. COption (c)

    Both I and II follow

  4. DOption (d)

    Neither of them follows

View answer & explanation

Correct answer

Answer: (c)C.

Both I and II follow

Explanation not yet available.

Question 990

RRB NTPC 2018• Mathematics• Mathematics

Sri Lanka (then Ceylon) was granted independence as the Dominion of Ceylon in the year -

  1. AOption (a)

    1948

  2. BOption (b)

    1972

  3. COption (c)

    1947

  4. DOption (d)

    1968

View answer & explanation

Correct answer

Answer: (a)A.

1948

Explanation not yet available.