Quiz-1

Weight of 1 apple = 250 g
Weight of 6 apples = 250 * 6
= 1.5 kg

Initial weight = 14.5 - 1.5
= 13 kg
Number of apples in his carton initially :
= 13000/250
=52 apples

To solve this, we will use hit and trial method.

Using the option (1) = 0.000008, and got the square root of the difference, which did not work, so (1) is wrong.

Repeat the same procedure for all other options. The correct answer is found to be option (4).

0.006898 - 0.000009 = 0.006889, which is a perfect square of 0.083.

 

First Prime Factorize 86700, that Gives;

86700 = 2×2×5×5×3×17×17

As factor of 3 is not in Pair.

86700 should be divided by 3 to get a Perfect Square

i.e.- 86700/3  = 28900

Write it as a fraction
0.0155/1

Multiply 10000 to both numerator & denominator
(0.0155 × 10000)/(1 × 10000) = 155/10000

Find HCF (Highest Common Factor) for 155 & 10000, HCF = 5

divide numerator & denominator by 5
155/10000 = (155 / 5) / (10000 / 5)  = 31/2000

Hence, Option A is correct.

The tailor has to make 8 piece from 1 metre.
So for 1 piece ,the measurement will be 1/8=0.125 m
from 37.5 m tailor can get 37.5/0.125 = 300 pieces

1. 36839/17 = 2167, Dividend contains 2 places of decimal So,3.68.39 / 17=21.67


2. 17050/62 = 275 , Dividend contains 2 places of decimal So,170.50/62 = 2.75


3. 87565/83 = 1055, Dividend contains 2 places of decimal So,875.65/83 = 10.55

Given, 0.3 × 0.25 × 0.5 × 0.125 × 24
It can be written as

= \frac{3}{10}\times \frac{25}{100}\times \frac{5}{10}\times \frac{125}{1000}\times 24

= \frac{1}{8} = 0.125

Let x + 543 + 5.43

= 603.26.

Then, x = 603.26 - (543 + 5.43)

= 603.26 - 548.43 =54.83

Missing digit = 8..

Required decimal=

In one hour =1/60×60=1/3600 sec = 0.00027

Video solution:

0.36 = 36/100 = 9/25.
Sum of the numerator and denominator is 9 + 25 = 34