Arithmetical Reasoning - Calculation Based ProblemsArithmetical Reasoning - Data BasedArithmetical Reasoning - Problems on AgesArithmetical Reasoning - Venn Diagram
1.A man has Rs. 480 in the denominations of one-rupee notes, five-rupee notes and ten-rupee notes. The number of notes of each denomination is equal. What is the total number of notes that he has? A) 45 B) 60 C) 75 D) 90 View Answer Report DiscussAnswer: Option DExplanation:Let the number of notes of each denominations be x. Then x + 5x + 10x + = 480 x = 30
2.A number consists of 2 digits whose sum is 11. If 27 is added to the number , then the digits change their places. What is the number? A) 47 B) 65 C) 83 D) 92 View Answer Report DiscussAnswer: Option AExplanation:Let the 10's digit be x.Then , unit's digit = (11-x) So, number = 10x + (11-x) = 9x + 11 9x + 11 + 27 = 10(11-x) + x 9x + 38 = 110-9x x=4 Ten's digit = 4 and unit's digit = 7 required number = 47
3.Find the number which when added to itself 13 times , gives 112 A) 7 B) 8 C) 9 D) 11 View Answer Report DiscussAnswer: Option BExplanation:let the number be x . Then , x +13x = 112 <=> 14x = 112 x = 8
4.ln a class, there are 18 boys who are over 160 cm tall. If these constitute three-fourths of the boys and the total number of boys is two-thirds of the total number students in the class, what is the number of girls in the class? A) 6 B) 12 C) 18 D) 24 View Answer Report DiscussAnswer: Option BExplanation:let the number of boys be x .Then 3/4x =18 or x =18 x 4/3 = 24 If total number of students is y , then 2/3y = 24 or y = 24 x 3/2 = 36 Number of girls in the class = 36-24 = 12
5.A bird shooter was asked how many birds he had in the bag. He replied that there were all sparrows but six, all pigeons but six, and all ducks but six. How many birds he had in the bag in all ? A) 9 B) 18 C) 27 D) 36 View Answer Report DiscussAnswer: Option AExplanation:There were all sparrows but six means that six birds were not sparrows but only pigeons and ducks. Similarly, the number of sparrows + number of ducks = 6 and the number of sparrows + number of pigeons = 6. This is possible when there are 3 sparrows, 3 pigeons and 3 ducks i.e. 9 birds in all.
Arithmetical Reasoning - Calculation Based ProblemsArithmetical Reasoning - Data BasedArithmetical Reasoning - Problems on AgesArithmetical Reasoning - Venn Diagram