Correct Answer: 0

Solution : The product of unit digits of the 2nd and 3rd numbers is (5 × 8) = 40.
The unit digit of this product is 0.
So, the digit in the unit's place of the product of 49237 × 3995 × 738 × 83 × 9

Correct Answer: 17 cm

Solution : We know that the sum of the length of either two sides of a triangle must be more than the third side.
So, the third side < (14 + 9)
Or, the third side < 23
Also, the difference in lengths of any two

Correct Answer: 1.5 hours

Solution : The distance covered by the first car in one hour at 60 km/h. 
Distance = Speed × Time = 60 × 1 = 60 km.
The time is taken to cover the same distance at a speed of 40 km/h.
Time = $\frac{\text{Distance}}{\text{Speed}} =

Correct Answer: (9, 27, 729)

Solution : Given:
(7, 21, 343); (8, 24, 512)

Multiply the first number by 3, to obtain the second number and find the cube of the first number, to obtain the third number in the given set of numbers –
⇒ (7, 21, 343)→7 ×

Correct Answer:

Solution : On comparing the question figure and all the answer figures, the following figure will combine and make the complete pattern –

Hence, the second option is correct.

Correct Answer: $45^{\circ}$

Solution : We know that the sum of the angles of a triangle = $180^{\circ}$
Let $\angle R = x$
Given: $2 \angle R-\angle P=\angle Q-\angle R$
⇒ $2x - \angle P = \angle Q -x$
⇒ $3x = \angle Q+\angle P$
Now, $\angle R + \angle

Correct Answer: JFD

Solution : Given:
DRH, YOG, TLF, OIE, ?

Subtract 5, 3, and 1 from the place value of the first, second, and third letters of the previous letter cluster to obtain the next letter cluster of the series.
First letter of the series→D – 5 = Y;

Correct Answer: 1680

Solution : Two consecutive numbers have a maximum difference of 2.
So, the composite numbers that satisfy the given condition are 10, 12, and 14.
The product of these three numbers = 10 × 12 × 14 = 1680
Hence, the correct answer is 1680.

Correct Answer: Rs. 8.4

Solution : Let the original price of an apple be $10x$.
The new price will be reduced by 30% $= 7x$
Now, according to the question,
$\frac{140}{7x}-\frac{140}{10x}=5$
⇒ $\frac{420}{70x}=5$
⇒ $\frac{6}{x}=5$
⇒ $x = 1.2$
The new price of apple $= 7x=7\times1.2=8.4$
Hence, the correct answer

Correct Answer: Endangered plants and animals

Solution : The correct option is Endangered plants and animals.

The Red Data Book was created in 1965 and is sometimes referred to as the Russian Red Data Book, as it was developed by Russian researchers. The book provides a comprehensive overview of