(a) 7/12
(b) 1/2
(c) 5/12
(d) 1
Q2. There is a pyramid on a base which is a regular hexagon of side 2a cm. If Hight of this pyramid is of length 5a/2 cm, then the volume of this pyramid is
Q3. The average height of the students in a class of 10 is 105 cm. If 20 more students with an average height of 120 cm join the class, what will the new average height be
(a) 105 cm
(b) 110 cm
(c) 112 cm
(d) 115 cm
Q4. The arithmetic mean of 100 observations is 24, 6 is added to each of the observations and then each of them is multiplied by 2.5. Find the new arithmetic mean.
(a) 30
(b) 75
(c) 35
(d) 60
Q5. What will be simple interest for 1 yr and 4 months on a sum of Rs. 25800 at the rate of 14% per annum?
(a) Rs. 4816
(b) Rs. 2580
(c) Rs. 4816.75
(d) Rs. 4815
Q6. Rs. 1000 are invested at 5% p.a. simple interest. If the interest is added to the principal after every 10 years, the amount will become Rs. 2000 after
(a) 15 years
(b) 50/3 years
(c) 18 years
(d) 20 years
Q7. A rectangular carpet has an area of 120 square metres and a perimeter of 46m. The length of its diagonal is:
(a) 11 m
(b) 13 m
(c) 15 m
(d) 17 m
Q8. The area of a circle is increased by 22 cm^2 when its radius is increased by 1 cm. The original radius of the circle is:
(a) 6 cm
(b) 3.2 cm
(c) 3 cm
(d) 3.5 cm
Q9. A company offers three types of successive discounts. 1st : 25% and 15%; 2nd : 30% and 10%; 3rd : 35% and 5%. Which offer is better for a customer?
(a) 1st
(b) 2nd
(c) 3rd
(d) all are equally good
Q10. A dealer sold three-fourth of his articles at a gain of 24% and the remaining at the cost price. Percentage of gain in the transaction is
(a) 15
(b) 18
(c) 24
(d) 32
(e) None of these
Q11. Find the product of place value and face value of 5 in 65231
(a) 28000
(b) 25000
(c) 30000
(d) 26000
Q12. The ratio of incomes of A and B is 5 : 3 and that of their expenditures is 9 : 5. If they save Rs. 2600 and Rs. 1800 respectively, then their incomes are:
(a) Rs. 9000, Rs. 5400
(b) Rs. 1000, Rs. 6000
(c) Rs. 6000, Rs. 3600
(d) Rs. 8000, Rs. 4800
(a) 2 : 3 : 5
(b) 15 : 10 : 6
(c) 5 : 3 : 2
(d) 6 : 10 : 15
Q14. A man bought 5 shirts at Rs. 450 each, 4 trousers at Rs. 750 each and 12 pairs of shoes at Rs. 750 each. What is the average expenditure per article?
(a) Rs. 678.5
(b) Rs. 800
(c) Rs. 900
(d) Rs. 1000
Q15. The average of five consecutive natural numbers is m. if the next three natural number are also included, how much more than m will the average of these 8 number be?
(a) 1
(b) 1.5
(c) 1.4
(d) 2
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