set 4-B

Study the diagram below carefully. What is the missing number?

• 22

• 39

• 29

• 27

• 35

Father is 27 years older than his son, Moses. Mother is 24 years older than her son, Moses. The sum of the ages of Father and Mother is 93. How old is Moses?

• 19

• 21

• 24

• 25

• 26

How many whole numbers smaller than 500 are divisible by 3 formed by arranging the following digits 2, 4, 6, and 9. For each number, each digit can only be used once.

• 14

• 12

• 16

• 18

• 19

The bird feeder has two sections of the same size. The sections are connected internally so that the seeds from the upper section can move to the lower section. When the bird feeder is full, it can feed 6 birds at a time, 3 in the upper section, and 3 in the lower section. When the feeder is filled to its capacity, it takes the 6 birds 9 hours to empty the feeder. The 6 birds eat at the same rate, and they eat until their respective sections are empty. Also, the birds in the upper sections cannot go down the lower section to eat. How long will the 3 birds in the upper section of the feeder feed themselves?

• 3.5 hours

• 2 hours

• `1 hour

• 3 hours

• 4 hours

Red had a certain number of bottle caps. He later gave 1/4 of them to Blue and 5/6 of the remainder to Green. If Blue received 40 bottle caps from Red, how many bottle caps did Red have at first?

• 40

• 64

• 72

• 48

• 56

The students from a primary school are going for a camping trip. If each bus takes 46 students, there will be 12 vacant seats. If each bus takes 37 students, 15 students will not get any seat. How many students are going to the camping trip?

• 126

• 130

• 135

• 132

• 136

Mr. Lee had some eggs on a tray. If the eggs were divided into groups of 4, 1 egg would be left on the tray. If the eggs were divided into groups of 6, 3 eggs would be left. If the eggs were divided into groups of 7, 5 eggs would be left. What was the least number of eggs Mr. Lee had on the tray?

• 31

• 32

• 33

• 34

• 35

The yellow, red, blue and green lights are able to make many types of signals. These signals can be made from one light, two lights, three lights or four lights at the same time. How many different signals can these lights make?

• 15

• 16

• 17

• 18

• 19

In the following cryptarithm, each of the symbols  , , ,   represents a digit from 0 to 9. What is the value of the sum      ?

• 15

• 29

• 25

• 22

• 30

The first three figures of the pattern are shown below. Clusters of pink hexagons are surrounded by blue hexagons in each of the three figures. If the pattern continues, how many blue hexagons are there in the 16th term of the pattern shown below?

• 700

• 777

• 677

• 655

• 800