Class 5 Computational Thinking & AI
Official CBSE Student Handbook curriculum with 300 interactive practice questions (20 questions per chapter), decomposition puzzles, pattern recognition challenges, and step-by-step logic solutions.
We the Travellers - I
We the Travellers – I introduces computational problem-solving through positional digit puzzles, password logic deduction, and constraint-based number formation.
Practice Questions (20)
Click an option to test your solutionFind the next number in the sequence: 3, 6, 12, 24, 48, ?
Hint: Divide each term by the previous one to find the common ratio.
A number pattern: 1, 4, 9, 16, 25, ? What comes next?
Hint: Recognize the pattern as squares of natural numbers.
The sum of the first 5 odd numbers is: 1 + 3 + 5 + 7 + 9 = ?
Hint: Add the five odd numbers. Note: sum of first n odd numbers = n^2.
In a number grid, Row 1 = 2, 4, 6. Row 2 = 8, 10, 12. Row 3 = 14, 16, 18. What is the last number in Row 5?
Hint: Find the pattern in what the last number of each row is: 6, 12, 18, 24, 30.
What is the value of the 10th term in the sequence: 5, 10, 15, 20...?
Hint: The nth term = 5 x n.
A sequence: 2, 5, 11, 23, 47... What is the rule?
Hint: Try: multiply each term by 2, then add 1 to get the next term.
How many squares (of any size) are in a 3x3 grid of unit squares?
Hint: Count squares of each possible size separately: 1x1, 2x2, 3x3.
What is the missing number? 8, ?, 20, 26, 32
Hint: Find the common difference by subtracting consecutive known terms.
A Fibonacci-like sequence starts: 2, 3, 5, 8, 13, ? Each term is the sum of the previous two.
Hint: Add the last two terms to get the next one: 8 + 13 = 21.
A pattern of triangles: Row 1 = 1 triangle, Row 2 = 3 triangles, Row 3 = 5 triangles. How many triangles in Row 8?
Hint: The nth row has (2n-1) triangles. Substitute n=8.
What is the smallest 5-digit number that can be formed using three different digits, where one digit is repeated three times?
Hint: Start with 1, use 0 three times, and end with 2.
A 5-digit palindrome number reads the same forward and backward. The sum of all its digits is 19. If the hundreds digit is 5 and the ten-thousands digit is 3, what is the thousands digit?
Hint: Equation: 3 + b + 5 + b + 3 = 19 → 2b + 11 = 19.
How many 4-digit numbers have all odd digits?
Hint: 5 choices for each of the 4 positions: 5⁴ = 625.
In a 5-digit number 4A7B2, the sum of all digits is 21. If A is greater than B by 2, what is the value of digit A?
Hint: A + B = 8 and A − B = 2. Solve for A.
What is the difference between the greatest and smallest 5-digit numbers formed by using all the digits 6, 2, 0, 9, 4 exactly once?
Hint: 96420 − 20469 = 75951.
How many times does the digit '7' appear in all the whole numbers from 1 to 100?
Hint: 10 times in units place and 10 times in the seventies (70-79). Total = 20.
How many 2-digit numbers have the sum of their digits equal to 8?
Hint: List them from 17 to 80: 1+7=8, 2+6=8... 8+0=8.
A digital encoder takes a 3-digit number, multiplies the hundreds digit by 4, adds the tens digit, and subtracts the units digit. For the number 635, what is the output?
Hint: (6 × 4) + 3 − 5 = 24 − 2 = 22.
What is the place value of 9 in 4,92,310 minus the face value of 9 in the same number?
Hint: Place value is 90,000; face value is 9. 90,000 − 9 = 89,991.
If X = 4, Y = 7, and Z = 1, what is the smallest 4-digit number that can be formed using digits X, Y, and Z where Y is repeated twice?
Hint: Arrange 1, 4, 7, 7 in ascending order: 1477.
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