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“Two years ago, I was three times as old as my brother was. In three years’ time, I will be twice as old as my brother.”
17
The largest 4-digit number that is exactly divisible by 12 is
9996
How many prime numbers between 1 and 100?
25
What single digit appears most frequently between and including the numbers 1 and 1,000?
1
Rico the Rabbit eats one carrot on Sunday, two carrots on Monday, four carrots on Tuesday, and so on. How many carrots does he eat every week?
127
How many days are there in 5 consecutive years?
1826
There are twelve kids in a classroom. Six kids are wearing socks and 4 are wearing shoes. Three kids are wearing both. How many have bare feet?
5
What is the value of x?
0.25
10
What is the value of 1/2 of 2/3 of 3/4 of 4/5 of 5/6 of 6/7 of 7/8 of 8/9 of 9/10 of 1000?
100
Which two numbers make a one-digit number when they are multiplied but a two-digit number when they are added together?
1 and 9
Four friends are racing. Lisa finishes four hours ahead of Tony with Pete finishing eight hours ahead of Max. Max needed six more hours to finish than Lisa. Whose finish first?
Pete
If you are eight feet away from a door and with each move you advance half the distance to the door. How many moves will it take to reach the door?
never or infinite
If you see an electric train heading east at 70 mph but there is a wind blowing west at 80 miles per hour, which way is the smoke going to blow from the train?
No smoke (electric train)
A teacher says that there are fewer than 30 students but more than 20 in a classroom. The children can be divided into groups of two, three, four, six, and eight with no leftovers. How many students are in the class?
24
What is the missing sequence: 7, 8, 18, 57, …, 1165
232
