Math Problems | MCQs

Explanation

The only pattern in which they can sit according to the given situation is,

BGBGBGB

Now boys can be arranged among themselves in 4! ways, and girls among themselves in 3! ways,

So total no. of ways 

= 4 ! × 3 ! = 144

Explanation

Let's evaluate the equation:

(1/4 + 5/8) = 2/8 + 5/8 = 7/8

(1/2 + 3/4) = 4/8 + 6/8 = 10/8 = 5/4

Add the two expressions:

(7/8) + (5/4) = 7/8 + 10/8 = 17/8

So, the equation evaluates to 17/8.

Therefore, the correct answer is 17/8.

Explanation

Let the product of two real numbers = ab

One number =9

9a=72

A= 72/9

A=8

Explanation

The basic formula to find the area of a triangle is, area of triangle = 1/2 (b × h);

where 'b' is the base

and 'h' is the height of the triangle

Explanation

In geometry, the area enclosed by a circle of radius r is πr2

Arear of the circle: πR2

The perimeter of the circle: C = 2πR

Symmetry group: O(2)‎

Explanation

perimeter of square=4×side

=4×2.5

=10cm

SH5-9-2023

Explanation

Explanation

Explanation

Explanation

17m

Area of the rectangular carper =120 cm2
Perimeter =46 m
2(l+b)=46
(l+b)=46/2

l+b=23

And, length × breadth=120

Now, we know that :

(l−b)2=(l+b)2−4lb
(l−b)2=(23)2−4×120
(l−b)2=529−480
(l−b)2=49

(l−b)2=(7)2

Hence, l−b=7

And l+b=23

By adding, we get 2