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RRB JE 2019:Maths Revision Quiz-10

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Question 1

If √(1 - sin²A) = x, then the value of x is

Question 2

Find the median of the numbers 24, 36, 46, 17, 18, 25, 35.

Question 3

Arjun is facing east. He walks 10 m in this direction, then turns left and walks for another 10 m, then he turns right to walk 25 m and from there he walks another 10 m towards south. Finally, he walks 50 m to his left. How far is he from his original position?

Question 4

In a circle of radius 21 cm, an arc subtends an angle of 72 ° at the centre. Find the length of the arc.

Question 5

If a boat goes upstream at a speed of 18 km/hr and comes back the same distance at 30km/hr. What is the average speed (in km/hr) for the total journey?

Question 6

A train ‘A’ of 84 km/hr crossed train B in 10 sec. The second train ‘B’ which is coming from its same direction of train ‘A’. If B increase it’s speed by 2 times then it takes 22.5 sec. The length of train ‘B’ is the half of ‘A’ length then find the Blength= ?

Question 7

If the integers m and n are chosen at random between 1 and 100, then almost distinct numbers of the form

is divisible by 5 equals to:

Question 8

The ratio of two numbers is 3:4 and their HCF is 5. Their LCM Is:

Question 9

The average presence of students in a class on Monday, Tuesday and Wednesday is 30 and on the Wednesday, Thursday and Friday and Saturday is 28 then find the number of students who attended the class on Wednesday, if the average number of students on all the six days is 27.

Question 10

A starts some business with Rs. 25,000. After 6 months, B joins him with Rs. 35,000. At the end of the year, in what ratio should they share the profit?

Question 11

A bookseller bought 6 sets of books for Rs.1800 per set having 5 books in each set and marked each at same price. He sold 3 sets such that in each set he sold 3 books at 10% discount and 2 books at 5% discount. In the remaining 3 sets he sold all the books at 5% discount. If, total profit he made on his sales is Rs.700.5 then find the marked price of one book.

Question 12

In an examination 65% students pass in history and 55% students pass in hindi. If 5% students failed in both the subjects, then what is the percentage of students who have passed in both the subjects?

Question 13

Respective ratio of speeds of a truck and a car is 4 : 5. Speed of a bus is 50% more than that of truck. If bus covers a distance of 1000 km in 2 hrs less than the time taken by car to cover the same distance then, what is speed of bus ?

Question 14

If the amount is 2.25 times of the sum after 2 yr at compound interest (compound annually), the rate of interest per annum is

Question 15

A loan of Rs. 12 lakhs were taken from bank with simple interest for as many years as the rate of interest. After loan period is over, Rs. 432000 was paid as an interest. What was the rate of interest?

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