Trắc nghiệm IQ bằng Tiếng Anh - Đề số 2

The series is made up of odd numbers starting at 1, making 8 the odd one out.

Answer: 9

The difference between numbers in the series increments by 1 each time:

• 29 minus 27 is 2
• 27 minus 24 is 3
• 24 minus 20 is 4
• 20 minus 15 is 5

The last number in the series is 15 minus 6 = 9.

Answer: 312

This series of numbers alternates between multiplying by 5 and adding 2:

•  2 x 5 = 10
• 10 + 2 = 12
• 12 x 5 = 60
• 60 + 2 = 62
• 62 x 5 = 310

Finally, 310 + 2 gives you an answer of 312.

Answer: A

The three balls form a square with the missing ball. The balls are brighter towards the corners of the square, so the correct answer is A.

Answer: 128

This series is based on multiplying by 2 each time.

• 2 x 2  = 4
• 2 x 4  = 8
• 2 x 8  = 16
• 2 x 16 = 32
• 2 x 32 = 64

Finally, 2 x 64 gives us the answer 128.

Answer: B

This visual puzzle is based around increments in column height.

First, the left hand column is 1 block high, then 2, then 3.

Then, the centre column is 1 block high, then 2, then 3.

Finally, the right hand column is 1 block high, then 2.

So, the answer to this question is a 3 block high column on the right hand side, which is answer B.

Answer: F

Each square is made up of 9 smaller grey squares.

In each row of 3, if we add the red shapes together all 9 of the smaller squares are filled.

Looking at the bottom row, the first two red shapes use all of the smaller grey squares, except the centre one. The answer with a single small red square in the centre is F.

Answer: 225

121+23 = 144
144+25 = 169
169+27= 196
so it must be 196+ 29 which is 225

Answer: -5

The pattern here is in columns. In each column, the difference bewteen the top number and the middle number is the sum of the digits of the bottom number:

•  9 - 6  = 3 (1 + 2)
• 38 - 35 = 3 (2 + 1)
• 47 - 42 = 5 (2 + 3)

In the last column the digits 2 and 7 add up to 9. Taking 9 away from 4 gives us -5.

Answer: 95

Another series, this time the difference between numbers increases by 4.

• 10 - 5  = 5
• 19 - 10 = 9
• 32 - 19 = 13
• 49 - 32 = 17
• 70 - 49 = 21

So we can see the next increment will be 25.

• 70 + 25 = 95