Maths: Nts give 60%-70%Subjective Questions


Q:1 The first term of a series is 5 and each subsequent term is −2 times the previous term. What will be the sum of the first 5 terms of this series?

−155
−145
0
55
155


Q2.Given the digits 1, 2 and 3, how many 3-digit numbers can you make such that no digit is repeated?

3
4
5
6
8

Q:3 What is 50 percent of 75 percent of 200?

Ans:

Q:4 A shop offers a discount of 15% for a DVD set with a regular price of $100. What is the final cost to the customer to purchase this DVD set, if a sales tax of 4% needs to be added to the discounted price?

81.60
88.40
89.00
119.00
119.60

Q: 4A set A contains 5 numbers with an arithmetic mean of 50. Another set B contains 10 numbers with an arithmetic mean of 100. What is the ratio of the sum of all numbers of set B to the sum of all numbers of set A?

1:2
1:1
2:1
4:1
5:1

If pk= -5 = 15kand , k= 5what is the value of p/4?

2
4
5
15
16