10 Question MCQ (including Assertion)

Question 1 of 10

Why can a child standing at an end of the line never say “2”?

A Because the end child must be the tallest B Because an end child has only one immediate neighbour C Because an end child has no neighbours D Because the number 2 is used only by the shortest child

Select one option. Answers are shown after the test.

Question 2 of 10

From 1 to 1000, how many times is the digit 7 written?

A 100 B 200 C 300 D 301

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Question 3 of 10

For five children of different heights, can every child say “1”?

A Yes, if they stand in increasing order of height B Yes, if the tallest child stands in the middle C No, because the tallest child has no taller neighbour D No, because end children can never say 1

Select one option. Answers are shown after the test.

Question 4 of 10

You are designing a 5 -digit product ID with a "checksum" (digit sum) of 4 . To make the ID number as large as possible for easier sorting, what should the ID be?

A 11110 B 40000 C 10021 D 22000

Select one option. Answers are shown after the test.

Question 5 of 10

Evaluate the statement: "Subtracting a 5-digit number from another 5-digit number always yields a 5-digit number."

A Always True B Only Sometimes True C Never True D True only if no borrowing is needed

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Question 6 of 10

What is the result when you subtract the smallest 5-digit palindrome from the largest 5-digit palindrome?

A 89,998 B 90,000 C 88,888 D 89,999

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Question 7 of 10

In the grid below, there is currently only ONE supercell. According to the textbook puzzle, swapping two specific digits in one of the numbers will instantly increase the total number of supercells in the grid to 4. Which number must be altered?$$ \begin{array}{|c|c|c|} \hline 16200 & 39344 & 29765 \\ \hline 23609 & 62871 & 45306 \\ \hline 19381 & 50319 & 38408 \\ \hline \end{array} $$

A 29765 B 62871 C 50319 D 39344

Select one option. Answers are shown after the test.

Question 8 of 10

A network routing algorithm uses the Collatz process to determine the next hop for a data packet. If the packet's initial size is a power of 2 (e.g., 64 bytes), the algorithm will:

A Immediately reroute it to an 'odd' processing channel. B Consistently halve the packet size in each step until it reaches 1 byte. C Increase the packet size first to handle overhead. D Get stuck in a loop, causing a network timeout.

Select one option. Answers are shown after the test.

Question 9 of 10

For the 4-digit number 6382, what is the result after one Kaprekar round?

A 6264 B 4176 C 6174 D 2368

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Question 10 of 10

The digit sums of 123, 234, 345, 456, and so on show which pattern?

A They are all odd numbers B They are multiples of 3 and increase by 3 each time C They are all equal to 6 D They decrease by 3 each time

Select one option. Answers are shown after the test.

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10 Question MCQ (including Assertion)