Page 49 - CT&AI_CLasa_7_Part_1

7. A tank is 0.8 full. After 12.5 litres are removed, 9. In a path of numbers, you start at 0.12. Each
the tank is 0.3 full. What is the total capacity subsequent numbers is the previous numbers
of the tank in litres? (Data Analysis) multiplied by 1.5. What is the value of the 4th
numbers in this sequence? (Pattern Recognition)
(a) 25
(a) 0.18
(b) 50
(b) 0.27
(c) 12.5
(c) 0.405
(d) 37.5
(d) 0.6075
computational thinking quest 8. A rule for finding the approximate length of

diagonal of a square is to multiply the length 10. A computer program takes a number,
Tick ( ) the correct option. of a side of the square by 1.414. The length of multiplies it by 0.5, then divides the result
the diagonal when the length of a side of the by 0.2. If the final output is 25, what was the
square is 8.3 cm, will be starting number? (Algorithmic Thinking)
(Algorithmic Thinking)
(a) 6.25
(a) less than 11 cm
(b) 10
(b) equal to 11 cm

(c) 2.5
(c) greater than 11.5 cm

(d) Can’t be determined (d) 100

The initial sequence is: 0.0 0.0 0.0 0.0 0.0 0.0 0.0
You start with the number 0.0.

Each time you press a button, it adds 0.2 to the next numbers only (except the current).
Your goal is to make all numbers equal to 1.0 in this sequence:
What is the minimum number of button presses needed?

(a) 2 (b) 3

(c) 4 (d) 5

Another Peek Beyond the Point 47