IGCSE Mathematics Paper-1: Specimen Questions with Answers 177 - 180 of 324

Question 177

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Short Answer▾

Multiply out the brackets .

Explanation

Here given the

Question 178

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There are 10 boys and 15 girls in a choir.

The probability that Carla arrives at school before 09: 00 is .

What is the probability that Carla does not arrive before 09: 00?

Write your answer as a fraction.

Explanation

  • Here the given probability that Carla arrives at school before 09: 00 is
  • And find the probability that Carla does not arrive before 09: 00

Question 179

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Short Answer▾

The figures below are similar. The labelled sides are corresponding. What is the perimeter of the large pentagons?

The Figures below Are Similar

Explanation

  • Find the ratio of the corresponding side lengths.

  • Find the ratio of the perimeters.

  • Use these two ratios to set up a proportion and solve for

    The perimeter of the large pentagon is 50 cm.

Question 180

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Short Answer▾

A website is selling packages of Helium confetti Balloons for ₹ 60, but mentions that they original cost ₹ 80. What is the discount percentage?

Explanation

The percent of change formula can be used to find percent of discount.

Write the number as a percent.

The percentage of discount is 25 % .

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