Q.1 The average of 2, 4, 6, 8, and 10 is:
4
5
6
7
Explanation - Average = (2+4+6+8+10)/5 = 30/5 = 6.
Correct answer is: 6
Q.2 The mode of 3, 5, 7, 5, 9, 5, 11 is:
3
5
7
11
Explanation - Mode is the most frequently occurring value, which is 5.
Correct answer is: 5
Q.3 The median of the data 2, 4, 6, 8, 10 is:
4
5
6
8
Explanation - The middle value in ascending order is 6.
Correct answer is: 6
Q.4 The range of the data 15, 20, 25, 30, 35 is:
15
20
25
35
Explanation - Range = Maximum - Minimum = 35 - 15 = 20.
Correct answer is: 20
Q.5 If the mean of 5 numbers is 12, then their sum is:
50
60
65
70
Explanation - Sum = Mean × Number of terms = 12 × 5 = 60.
Correct answer is: 60
Q.6 Which measure of central tendency is most affected by extreme values?
Mean
Median
Mode
Range
Explanation - Mean is affected by very large or very small numbers.
Correct answer is: Mean
Q.7 The probability of getting a head when a coin is tossed is:
0
1/4
1/2
1
Explanation - There are 2 equally likely outcomes: head or tail. Probability = 1/2.
Correct answer is: 1/2
Q.8 The probability of rolling a 3 on a fair die is:
1/2
1/3
1/6
1/12
Explanation - There are 6 outcomes, and only 1 is favorable (3). Probability = 1/6.
Correct answer is: 1/6
Q.9 If 5 students scored 10, 15, 20, 25, and 30, the mean score is:
15
20
22
25
Explanation - Mean = (10+15+20+25+30)/5 = 100/5 = 20.
Correct answer is: 20
Q.10 The median of 12, 18, 14, 20, 16 is:
14
16
18
20
Explanation - Arranged: 12, 14, 16, 18, 20. Middle value = 16.
Correct answer is: 16
Q.11 The probability of an impossible event is:
0
1/2
1
2
Explanation - An impossible event never occurs, so its probability is 0.
Correct answer is: 0
Q.12 If a die is rolled, the probability of getting a number greater than 4 is:
1/6
2/6
3/6
4/6
Explanation - Numbers greater than 4 are 5 and 6. So probability = 2/6 = 1/3.
Correct answer is: 2/6
Q.13 The mode of 1, 2, 2, 3, 4, 4, 4, 5 is:
2
3
4
5
Explanation - 4 appears most frequently (3 times).
Correct answer is: 4
Q.14 In a bar graph, the length of each bar represents:
The mean value
The frequency
The range
The probability
Explanation - Bar graphs represent data using bars whose lengths show frequency.
Correct answer is: The frequency
Q.15 If the probability of winning a game is 0.7, the probability of losing is:
0.2
0.3
0.5
0.7
Explanation - P(Losing) = 1 - P(Winning) = 1 - 0.7 = 0.3.
Correct answer is: 0.3
Q.16 If 40% of students like cricket, then the probability a student likes cricket is:
0.2
0.4
0.6
0.8
Explanation - Probability is given by percentage/100 = 40/100 = 0.4.
Correct answer is: 0.4
Q.17 The range of the data 7, 12, 5, 18, 10 is:
12
13
15
18
Explanation - Range = Maximum - Minimum = 18 - 5 = 13.
Correct answer is: 13
Q.18 The mean of first 5 natural numbers is:
2
2.5
3
3.5
Explanation - Mean = (1+2+3+4+5)/5 = 15/5 = 3.
Correct answer is: 3
Q.19 If two dice are rolled, the total number of possible outcomes is:
6
12
18
36
Explanation - Each die has 6 outcomes. Total = 6 × 6 = 36.
Correct answer is: 36
Q.20 The probability of getting an even number when rolling a fair die is:
1/6
1/2
2/3
5/6
Explanation - Even numbers are 2, 4, 6 (3 outcomes). Probability = 3/6 = 1/2.
Correct answer is: 1/2
Q.21 If the mean of 8 numbers is 7, their sum is:
49
54
56
64
Explanation - Sum = Mean × Number of terms = 7 × 8 = 56.
Correct answer is: 56
Q.22 Which of the following is NOT a measure of central tendency?
Mean
Median
Mode
Range
Explanation - Range measures spread, not central tendency.
Correct answer is: Range
Q.23 The median of 10, 20, 30, 40 is:
20
25
30
35
Explanation - Median = average of two middle terms (20+30)/2 = 25.
Correct answer is: 25
Q.24 The probability of selecting a red card from a standard deck is:
1/2
1/3
1/4
1/6
Explanation - There are 52 cards, half red (26). Probability = 26/52 = 1/2.
Correct answer is: 1/2
Q.25 If 3 coins are tossed, the total number of possible outcomes is:
6
8
12
16
Explanation - Each coin has 2 outcomes. Total = 2^3 = 8.
Correct answer is: 8