The sum of two numbers is 99 and their HCF is 9. Total number of such pairs of numbers is?
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.
Which of the following is the first sentence in the paragraph?
Which should be the fourth sentence after rearrangement?
Which of the following is the fifth sentence of the passage?
1. The director of the research organization
P. cactus in food
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R. elaborated on the
S. crucial...
Which should be the fourth sentence after rearrangement?
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