alleryChoose the multiple of 6 from these numbers.
- 325
- 326
- 328
- 324
Show answer and solution
Correct answer: D. 324
324 is even and its digits add to 9, so it is divisible by both 2 and 3 and therefore by 6.
RRB NTPC Number System — practice questions — page 2
Explore 64 free Number System questions in RRB NTPC Quantitative Aptitude. Open each question or exercise to read its content, reference answers and available explanation.
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Showing questions 31–60 of 64.
Choose the multiple of 6 from these numbers.Read the answer and worked solution →What is the smallest digit x that makes the number 52x divisible by 3?Read the answer and worked solution →A byte can take how many different values, since it has 8 bits?Read the answer and worked solution →What does 2^3 x 2^4 equal?Read the answer and worked solution →Simplify 5^9 divided by 5^4.Read the answer and worked solution →Find the value of 7^0.Read the answer and worked solution →Simplify 2^-3.Read the answer and worked solution →Raising 0 to a negative exponent is typically treated as what?Read the answer and worked solution →Evaluate 4^3 x 5^3 using exponent rules.Read the answer and worked solution →Evaluate 27^(2/3).Read the answer and worked solution →What is the product √2 x √8?Read the answer and worked solution →Which of these equals √12 in simplest form?Read the answer and worked solution →Multiplying √5 by itself gives which number?Read the answer and worked solution →After rationalising the denominator, 1/√2 becomes which value?Read the answer and worked solution →Which of these is 2^5?Read the answer and worked solution →Compute 3^4.Read the answer and worked solution →An integer is divisible by 3 if and only if the sum of all its digits is divisible by which number?Read the answer and worked solution →A number is divisible by 4 if the number formed by its last two digits is divisible by which integer?Read the answer and worked solution →In base 10 notation, an integer is divisible by 5 if its final digit is 5 or which digit?Read the answer and worked solution →A positive integer is divisible by 2 if its final unit digit is divisible by which integer?Read the answer and worked solution →A natural number strictly greater than 1 that is not prime is defined by which mathematical term?Read the answer and worked solution →When a rational number is expressed as fraction p divided by q, what constraint applies to q?Read the answer and worked solution →When testing a large integer for divisibility by 2, which single digit is inspected?Read the answer and worked solution →To test if 2092 is divisible by 4, which calculation is tested?Read the answer and worked solution →To determine whether a large integer is divisible by 11, what calculation is performed on its digits?Read the answer and worked solution →Under the classical algebraic rules of Brahmagupta, what is the product of two debts?Read the answer and worked solution →How many rational numbers lie between any two rational points?Read the answer and worked solution →When does long division of a rational fraction terminate?Read the answer and worked solution →In number theory, what specific technical name is given to the property of being a prime number?Read the answer and worked solution →Which celebrated 6-digit recurring sequence forms the cyclic repeating block in decimal 1/7?Read the answer and worked solution →
Worked practice questions
What is the smallest digit x that makes the number 52x divisible by 3?
- 3
- 1
- 2
- 0
Show answer and solution
Correct answer: C. 2
The digits 5 and 2 add to 7, and adding 2 gives 9, which is divisible by 3; 0 and 1 give 7 and 8.
A byte can take how many different values, since it has 8 bits?
- 128
- 64
- 256
- 512
Show answer and solution
Correct answer: C. 256
Each of 8 bits has two states, giving 2^8 = 256 values.
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