Explanation

Herpetology is the scientific study of reptiles and amphibians.

It includes the study of their biology, behavior, ecology, and conservation.

Explanation

7x - 2 = 3

Add 2 to both sides:

7x = 5

Divide by 7:

x = 5/7

Explanation

7x + 14 = 21

Subtract 14 from both sides:

7x = 7

Divide by 7:

x = 1

Explanation

Discount = 15% of 80

= 0.15 * 80

= 12

Sale price = Original price - Discount

= 80 - 12

= 68

Explanation

Explanation

Given: 1, 2, 4, 7, 11, ?

The pattern appears to be formed by adding 1, 2, 3, 4, ... to the previous term:

1 + 1 = 2

2 + 2 = 4

4 + 3 = 7

7 + 4 = 11

11 + 5 = 16

Explanation

If yesterday was Sunday, then today is Monday.

- Tomorrow → Tuesday  

- Day after tomorrow → Wednesday

Explanation

B covers 28 meters in 7sec. So, B’s time over the course = (7/28)*1000 =250 sec.

Whereas A’s time over the course = 250 -7 = 243 sec.

i.e A’s time over the course is 4min, 3 sec

Explanation

Cost of 25 toys = 500

Cost of 01 toys = 500/ 25 = 20/ 1

1 toys = 20 

Cost f 75 toys = 75 x 20 = 1500

Explanation

The pattern is:

-1, -2, -3, -4, …

So the next subtraction is -5.

60 → 59 → 57 → 54 → 50 → 45