1. Complete the series: 2, 5, 10, 17, _.2. If A = 1, B = 2, C = 3, and so on, what is the value of the word "MATH"?3. Which number is the odd one out? 16, 25, 36, 49, 64.4. If the pattern is 3, 6, 9, 12, what is the next number in the sequence?5. If a clock is showing 3:45, what will be the angle between the hour and minute hands?6. Which letter comes next in the series: A, E, I, _?7. If 5 books cost $40, how much would 8 books cost?8. If a square has a perimeter of 20 cm, what is the length of one side?9. Which word does not belong with the others? Apple, Banana, Orange, Carrot.10. If a train travels at a speed of 80 km/h for 2 hours, how far will it travel?

The series is increasing by the sequence of odd numbers (3, 5, 7, 9, etc.). So, the next number would be 17 + 11 = 28.

The value of the word "MATH" would be M(13) + A(1) + T(20) + H(8) = 42.

The odd one out is 49, as all the other numbers are perfect squares of even numbers.

The pattern is increasing by 3 each time. So, the next number would be 12 + 3 = 15.

At 3:45, the minute hand is at 9 (45 minutes = 9/12 of the clock) and the hour hand is 3/4 of the way between 3 and 4. Therefore, the angle between the hour and minute hands is 180 degrees.

The next letter in the series would be 'O'. This series represents the vowels in the English alphabet.

If 5 books cost $40, then 1 book costs$40/5 = $8. Therefore, 8 books would cost 8 *$8 = $64.

If a square has a perimeter of 20 cm, then each side is 20/4 = 5 cm.

The word that does not belong with the others is 'Carrot'. All the other words are fruits, while 'Carrot' is a vegetable.

If a train travels at a speed of 80 km/h for 2 hours, it will travel 80 * 2 = 160 km.