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1
What is 13 × 6?
A.76
B.78
C.80
D.82
Explanation: 13 × 6 = 78.
2
The average weight of 10 students is 40 kg. If one student weighs 50 kg, what is the average weight of the remaining 9?
A.38
B.39
C.40
D.41
3
What is 12 × 15?
A.178
B.180
C.182
D.184
Explanation: 12 × 15 = 180.
4
What is the unit digit of 3¹⁰?
A.1
B.3
C.7
D.9
5
A mixture of 50 liters has milk and water in the ratio 4:1. How much milk is there?
A.30 liters
B.35 liters
C.40 liters
D.45 liters
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