a) 8 b) 1 c) 5 d) 4 Answer: c Explanation: Let the 1st, 2nd, 3rd and 4th digits ...
View QuestionThe last digit of the number obtained by multiplying the numbers 81 × 82 × 83 × 84 × 86 × 87 × 88 × 89 will be
The last digit of the number obtained by multiplying the numbers 81 × 82 × 83 × 84 ...
View QuestionWhich among 2^(1/2), 3^(1/3), 4^(1/4), 6^(1/6) and 12^(1/12) is largest?
Which among $${2^{\frac{1}{2}}}$$, $${3^{\frac{1}{3}}}$$, $${4^{\frac{1}{4}}}$$, $${6^{\frac{1}{6}}}$$ and $${12^{\frac{1}{{12}}}}$$ is largest? a) $${3^{\frac{1}{3}}}$$ b) $${4^{\frac{1}{4}}}$$ c) $${12^{\frac{1}{{12}}}}$$ d) $${2^{\frac{1}{2}}}$$ Answer: ...
View QuestionA forester wants to plant 44 apples tree, 66 banana trees and 110 mango trees in equal rows (in terms of number of trees). Also, he wants to make distinct rows of tree (i.e. only one type of tree in one row). The number of rows (minimum) that required is:
a) 2 b) 3 c) 10 d) 11 Answer: c Explanation: $$\eqalign{ & {\text{we}}\,{\text{first}}\,{\text{need}}\,{\text{to}}\,{\text{find}}\,{\text{the}}\,{\text{HCF}}\,{\text{of}}\,{\text{44,66,110}}. \cr ...
View QuestionConsider four digit numbers for which the first two digits are equal and the last two digits are also equal. How many such numbers are perfect squares?
a) 1 b) 2 c) 4 d) 0 Answer: a Explanation: Any four digit number in which first two ...
View QuestionThe HCF of two numbers, each having three digits, is 17 and their LCM is 714. The sum of the numbers will be:
a) 289 b) 391 c) 221 d) 731 Answer: c Explanation: Let the numbers be 17x and 17y where ...
View QuestionIf 381A is divisible by 9, find the value of the smallest natural number A?
a) 5 b) 8 c) 6 d) 9 Answer: c Explanation: A number is divisible by 9 when the ...
View QuestionThe sum of four consecutive two-digit odd numbers, when divided by 10, become a perfect square. Which of the following can possibly be one of these four numbers?
a) 21 b) 67 c) 25 d) 41 Answer: d Explanation: Using options, We find that four ...
View QuestionThe greatest number, which when subtracted from 5834, gives a number exactly divisible by each of 20, 28, 32, 35 is.
a) 1120 b) 5600 c) 4714 d) 5200 Answer: c Explanation: LCM of 20, 28, 32, 35 will be ...
View QuestionThe HCF of 2472, 1284 and a third number ‘N’ is 12. If their LCM is 2^3 × 3^2 × 5 × 103 × 107, then the number ‘N’ is:
The HCF of 2472, 1284 and a third number 'N' is 12. If their LCM is 23 × ...
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