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math & puzzles Online Quiz - 13

Description: math & puzzles Online Quiz - 13
Number of Questions: 20
Created by:
Tags: math & puzzles
Attempted 0/20 Correct 0 Score 0

log27 /log 12 = a then log 16 /log 6 = ?

  1. 4(3+a)/(3-a)

  2. 2(3+a)/(3-a)

  3. 8(3+a)/(3-a)

  4. 4(3-a)/(3+a)


Correct Option: D

65^2=?

  1. 4225

  2. 5625

  3. 4025

  4. 3925


Correct Option: A

124362769 divisble by 17?

  1. True

  2. False


Correct Option: A

John is 7 times as old as his son. 10 years hence he will be 3 times as old as his son. What are their present ages (in years)?

  1. 4,28

  2. 5,35

  3. 3,21

  4. 7,49


Correct Option: B

On giving a reduction of 20% on clothes, a clothmerchant’s sale increased by 30% to become Rs 26,000 in the month of June 2010. What was the previous sale?

  1. 25000

  2. 30000

  3. 13000

  4. 24500


Correct Option: A

AI Explanation

To solve this question, we can use the concept of percentages and the relationship between the original sale and the reduced sale.

Let's assume the previous sale was 'x' rupees.

According to the question, a reduction of 20% is given on clothes. This means the reduced sale is 80% of the original sale. So, the reduced sale will be 0.8x rupees.

It is also mentioned that the reduced sale increased by 30% to become 26,000 rupees. So, we can set up the equation: 0.8x + 0.3(0.8x) = 26,000.

Now, let's solve this equation to find the value of x.

0.8x + 0.3(0.8x) = 26,000 0.8x + 0.24x = 26,000 1.04x = 26,000 x = 26,000 / 1.04 x = 25,000

Therefore, the previous sale was 25,000 rupees.

The correct answer is option A) 25000.

  1. 1231111123

  2. 1231111213

  3. 1231112213

  4. 1233111213


Correct Option: B

Tata Consultancy Services

  1. Tata Consultancy Senvices

  2. Tata Cousultancy Services

  3. Tata Consultancy Services

  4. Tate Consultancy Services


Correct Option: C
  1. xxyyxyxyyyx

  2. xxyyxyxxyyx

  3. xxyyxyxyxyx

  4. xxyxxyxyyyx


Correct Option: A

Mohandas Karamchand Gandhi

  1. Mohandas Karamshand Gandhi

  2. Mohandas Karamchand Gandhe

  3. Mohandas Karamchand Gandhi

  4. Mohendas Karamchand Gandhi


Correct Option: C

Vacuum Cleaner

  1. Vaccum Cleaner

  2. Vacuum Cleener

  3. Vacuum Cleanar

  4. Vacuum Cleaner


Correct Option: D

United States of America

  1. United Statas of America

  2. Unitod States of America

  3. United States of America

  4. Unitod Statos of America


Correct Option: C

In a two-digit number, if it is known that its ten's digit exceeds its unit's digit by 2 and that the product of the given number and the sum of its digits is equal to 252 then the number is:

  1. 24

  2. 42

  3. 46

  4. 64


Correct Option: B

A monkey, at the bottom of a well, begins climbing the wall. It climbs for one hour and rests the next hour. In one hour it climbs 4 meters. In the one hour it rests, it slips back 2 meters. If the height of the wall is 20 meters, then the time taken by the monkey to climb out of the well(in hours) is?

  1. 20

  2. 17

  3. 16

  4. None of these


Correct Option: B

Find the odd man out in the following set of numbers: 396, 462, 572, 396, 427, 671, 264

  1. 396

  2. 427

  3. 671

  4. 264


Correct Option: B

What is the sum of two consecutive odd numbers, the difference of whose squares is 48?

  1. 24

  2. 28

  3. 32

  4. 36


Correct Option: A

How many numbers from 1 - 100, which have the letter 'A' in their spellings?

  1. All

  2. None

  3. 99

  4. 1


Correct Option: B

Which of the following two statements is correct? 1. Peacocks lay eggs. 2. A Peacock lays eggs.

  1. 1

  2. 2

  3. Both

  4. Neither


Correct Option: D
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