IR Academy

04/01/2026

01/02/2025

What is the Roman numeral for 49?
a) IL
b) XLIX
c) XLIV
d) ###XIX

31/01/2025

He said, "I will visit my uncle tomorrow." (Change into indirect speech)

a) He said that he would visit his uncle the next day.
b) He said that he will visit his uncle tomorrow.
c) He said that he would visit his uncle tomorrow.
d) He said that he visited his uncle the next day.

31/01/2025

The train is ___ time, so we need to hurry.
a) in
b) at
c) on
d) for

10/11/2024

Reasoning

06/11/2024

05/11/2024

• a² – b² = (a-b)(a+b)

• (a+b)² = a² + 2ab + b²

• (a-b)² = a² – 2ab + b²

• a² + b² = (a-b)² +2ab

• (a+b+c)² = a²+b²+c²+2ab+2ac+2bc

• (a-b-c)² = a²+b²+c²-2ab-2ac+2bc

• a³-b³ = (a-b) (a² + ab + b²)

• a³+b³ = (a+b) (a² – ab + b²)

• (a+b)³ = a³+ 3a²b + 3ab² + b³

• (a-b)³ = a³- 3a²b + 3ab²- b³