Explanation

The factors of -4 that add up to -3 are -4 and +1.

So, x² - 3x - 4 = (x - 4)(x + 1).

Explanation

 The energy required to break down a nucleus into its constituent protons and neutrons is called nuclear binding energy. 

Explanation

About Senate of Pakistan

Senate: Upper House of Pakistan

Senate in Urdu: ایوان بالا

Formation: 1973

Original members: 45

Raised to 63: 1977

Raised 87: 2 March, 1985

Raised to 100: 2002

Senate elections are held after 3 years

The term of the Members of Senate is six years, however, one-half of its members retire after every three years.

Explanation

Formula: aₙ = a + (n - 1)d

a₇ = 28 + (7 - 1)(-4) = 28 + (6 × -4) = 28 - 24 = 4

Explanation

Total students = 30 boys + 20 girls = 50

Percentage of boys = (30 / 50) × 100 = 60%

Explanation

On the score of →  on the ground of
(کسی وجہ سے، کسی بنیاد پر)

Explanation

Epidemiology, the study of epidemics, is sometimes defined as the medical aspect of ecology, for it is the study of diseases in animal populations. 

Explanation

The correct formula to calculate a winner's election percentage is:

(Winner’s votes ÷ Total votes) × 10

Explanation

Calculate stepwise:

120% of 6250 = (120/100) × 6250 = 7500

12% of 7500 = (12/100) × 7500 = 900

20% of 900 = (20/100) × 900 = 180

Explanation

"Still" most commonly functions as an adverb