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PRIME TIMES (Prime Numbers) [NEW] MATHS - PRIME TIMES (Prime Numbers) [NEW]

Gujarat Board (GSEB) - STD 6 - MATHS (GSEB - English Medium). 204 questions in this chapter.

Question types

PRIME TIMES (Prime Numbers) [NEW] question types

204 questions across 6 question groups — pick any mix to generate a MATHS paper with step-by-step answer keys.

204
Questions
6
Question groups
5
Question types
Sample Questions

PRIME TIMES (Prime Numbers) [NEW] questions

One sample from each question group in this chapter. Select any group above to see the full set with answer keys.

Q 201 Marks Question1 Mark
The first number has prime factorization $2 \times 3 \times 7$ and the second number has prime factorization $3 \times 7 \times 11$. Are they co-prime? Does one of them divide the other?
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Q 263 Marks Question3 Marks
In each of the following numbers, replace ${ }^*$ by the smallest number to make it divisible by 9 :
(i) $67 * 19$  (ii) $66784^*$  (iii) $538 * 8$
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Q 273 Marks Question3 Marks
In each of the following numbers, replace * by the smallest number to make it divisible by 3 :
(i) $75 * 5$  (ii) $35 * 64$  (iii) $18 * 71$
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Q 283 Marks Question3 Marks
Find the largest and smallest 4 digit numbers that are divisible by 4 and are also palindrome. Note that a number is a palindrome if it does not change by reversing the digits.
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Q 303 Marks Question3 Marks
The teacher asked if 14560 is divisible by all of $2,4,5,8$ and 10 . Ravish checked for divisibility of 14560 by only two of these numbers and then declared that it was also divisible by all of them. What could those two numbers be?
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