SHS BATTLE OF THE BRAIN 2023-ELIMINATION ROUND

What percent of fire-related deaths are due to smoke inhalation rather than burns?

• 10%

• 50%

• 80%

• 90%

What is the product of (1 - x) (1 + x) ?

• 2 - x

It is a tentative conclusion or answer to a specific question raised at the beginning of the investigation.

• generalization

• theory

• hypothesis

• assumptions

Linen is made from what plant?

• herbs

• shrubs

• flax

• creepers

• 2a -2x

• (a + x)(a -x)

• ax(a - x)

• (a - x)(a-x)

It is the most reliable measure of central tendency.

• mean

• median

• mode

• decile

Find the mean of the following score: 15, 16, 17, 18, 19, 20, 21, 22, 23

• 18

• 18.5

• 19

• 20

Which sea is the saltiest natural lake and is also at the lowest elevation on the face of the earth?

• Dead sea

• Artic ocean

• Mediterrenian sea

• Black ses

It is a sampling techniques where N individulas or items in the population are divided into separate subpopulation according to some common characteristics.

• Cluster Sampling

• Purposive Sampling

• Stratified sampling

• Random sampling

In a class of 40 students, 27 like calculus and 25 like Chemistry. How many like both Calculus and Chemistry?

• 10

• 11

• 12

• 13