Question
The sum of two numbers is 99 and their HCF is 9. Total
number of such pairs of numbers is?  ÂSolution
According to question, HCF =9 Then, the two number will be 9a,9b Also, 9a+9b = 99, or , a+b =11 All possible pairs of positive integers a and b are (1,10),(2,9),(3,8),(4,7), and (5,6). Hence, required pairs of positive integers are = (9,90),(18,81),(27,72),(36,63), and (45,54). Hence, the number of pairs of positive integers is 5.
Select the set in which the numbers are related in the same way as are the numbers of the following sets.
(NOTE : Operations should be performed ...
In a certain code language, 'cip civ cin' is written as 'life is good', 'cip cin er' is written as 'love is life'. How will 'love' written as in that la...
In this question, after a statement i and ii two conclusions have been given. Assuming the given in the statement together as truth, consider both the f...
Which of the following letter-clusters should replace # and % so that the pattern and relationship followed between the letter-cluster pair on the left...
Ravi is 7 ranks ahead of Sumit in a class of 39. If Sumit's rank is seventeenth from the last, what is Ravi's rank from the start?
Which two signs should be interchanged to make the given equation correct?
729 × 9 – (56 – 6) × 5 ÷ 2 + 152 × 19 = 69
Which of the following letter numeric clusters will replace the question mark (?) in the given series to make it logically complete?
JX 26, KY 31...
Select the correct option that indicates the arrangement of the given words in a logical and meaningful order.
1. Shirt piece
2. Thread
In each of the given number-clusters, the number on the right side of = (the equal to sign) is calculated by performing certain mathematical operations ...
A, B, C, D, E, F and G are of different heights. A is taller than only two people. D is shorter than only G. F is taller than A but shorter than B. C is...
Relevant for Exams:
