IGCSE Mathematics Paper-1: Specimen Questions with Answers 276 - 282 of 324

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Question 276

Write in Short

Short Answer▾

From the list above, write down

A prime number,

Explanation

  • A prime number is a whole number greater than 1 whose only factors are 1 and itself.
  • In this number is prime number
  • Because
  • And 2 is a prime number.

Question 277

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Short Answer▾

Expand and simplify

Explanation

Question 278

Write in Short

Short Answer▾

Simplify

Explanation

Here given the

Question 279

Write in Short

Short Answer▾
The Sequence of Diagrams

Look at the sequence of diagrams above.

The number of dots in each diagram is given in the table below.

The Number of Dots

Find the number of dots in

Diagram 50,

Explanation

For this sequence the diffrence between each diagram and next diagram is 3.

Here

Here apply this equaion

The number of dots in 50th diagram is 160.

Question 280

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Short Answer▾
The Diagram Shows Half of a Circle, Centre O

Calculate the perimeter of the shape.

Explanation

The perimeter is

Where r is the radius and d is the diameter

Here it is a semicircles, that is half the circle

is the perimeter

Here

Question 281

Write in Short

Short Answer▾

Factories

Explanation

Take the common terms

Question 282

Write in Short

Short Answer▾
The Diagram Shows Half of a Circle, Centre O

Calculate the area of the shape.

Explanation

Here

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