All Exams >
Bank Exams >
NABARD Grade A & Grade B Preparation >
All Questions
All questions of Surds & Indices for Bank Exams Exam
(256)0.16 x (256)0.09 = ?- a)4
- b)16
- c)64
- d)256.25
Correct answer is option 'A'. Can you explain this answer?
(256)0.16 x (256)0.09 = ?
a)
4
b)
16
c)
64
d)
256.25
|
Kavya Saxena answered |
(256)0.16 x (256)0.09 = (256)(0.16 + 0.09)
= (256)0.25
= (256)(25/100)
= (256)(1/4)
= (44)(1/4)
= 44(1/4)
= 41
= 4
| 1 Crore+ students have signed up on EduRev. Have you? Download the App |
(17)3.5 x (17)? = 178- a)2.29
- b)2.75
- c)4.25
- d)4.5
Correct answer is option 'D'. Can you explain this answer?
(17)3.5 x (17)? = 178
a)
2.29
b)
2.75
c)
4.25
d)
4.5
|
Raghavendra Sharma answered |
Let (17)^3.5 x (17)^x = 178.
Then, (17)^(3.5 + x) = 178.
∴ 3.5 + x = 8
⇒ x = (8 - 3.5)
⇒ x = 4.5
If 5a = 3125, then the value of 5(a – 3) is:- a)25
- b)125
- c)625
- d)1625
Correct answer is option 'A'. Can you explain this answer?
If 5a = 3125, then the value of 5(a – 3) is:
a)
25
b)
125
c)
625
d)
1625
|
Aadil Nawaz answered |
3125 is equal to 5's power five so a value is equal to 5 ....then a-3 so 5-3 =2 and 5 's power 2 is equal to 25
If m and n are whole numbers such that mn = 121, the value of (m – 1)n + 1 is:- a)1
- b)10
- c)121
- d)1000
Correct answer is option 'D'. Can you explain this answer?
If m and n are whole numbers such that mn = 121, the value of (m – 1)n + 1 is:
a)
1
b)
10
c)
121
d)
1000
|
Rajeev Kumar answered |
We know that 112 = 121.
Putting m = 11 and n = 2, we get:
(m – 1)n + 1 = (11 – 1)(2 + 1) = 103 = 1000.
If 3(x – y) = 27 and 3(x + y) = 243, then x is equal to:- a)0
- b)2
- c)4
- d)6
Correct answer is option 'C'. Can you explain this answer?
If 3(x – y) = 27 and 3(x + y) = 243, then x is equal to:
a)
0
b)
2
c)
4
d)
6
|
Faizan Khan answered |
3x – y = 27 = 33 ⇔ x – y = 3 ….(i)
3x + y = 243 = 35 ⇔ x + y = 5 ….(ii)
On solving (i) and (ii), we get x = 4.
Chapter doubts & questions for Surds & Indices - NABARD Grade A & Grade B Preparation 2024 is part of Bank Exams exam preparation. The chapters have been prepared according to the Bank Exams exam syllabus. The Chapter doubts & questions, notes, tests & MCQs are made for Bank Exams 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests here.
Chapter doubts & questions of Surds & Indices - NABARD Grade A & Grade B Preparation in English & Hindi are available as part of Bank Exams exam.
Download more important topics, notes, lectures and mock test series for Bank Exams Exam by signing up for free.
NABARD Grade A & Grade B Preparation
529 videos|681 docs|337 tests
|
Signup to see your scores go up within 7 days!
Study with 1000+ FREE Docs, Videos & Tests
10M+ students study on EduRev
|
© EduRev
|
Education Revolution
|
Follow Us
|
Signup to see your scores
go up within 7 days!
Access 1000+ FREE Docs, Videos and Tests
Takes less than 10 seconds to signup