Teachoo MCQ Test

Short quiz

Chapter 3 Class 6 - Number Play (Ganita Prakash) | 5 questions

Timed test. Answer every question before time runs out. Correct answers and solutions appear after submission.
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Question 1 of 5
Question 1 of 5
Assertion (A): In a data scrambling algorithm using the Kaprekar process, the input 9871 will converge to 6174 in fewer steps than the input 2111.
Reason (R): Numbers with more distinct and widely spread digits tend to produce larger differences in the subtraction step, accelerating convergence.
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Question 2 of 5
A car's odometer, which shows a 5-digit number, currently reads 47974 km . What is the minimum number of kilometers the car must be driven to show the next palindromic number?
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Question 3 of 5
How many 2-digit numbers exist that have a digit sum of exactly 14?
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Question 4 of 5
Solve the palindrome riddle: "I am a 5-digit palindrome. I am an odd number. My tens digit is double my units digit. My hundreds digit is double my tens digit." What number am I?
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Question 5 of 5
Assertion (A): In a simulation of particle decay that follows the Collatz rule, a particle with a starting mass that is a power of 2 (e.g., \(2^n\) ) will decay to 1 through a series of even-mass steps.
Reason (R): Dividing an even number by 2 results in an odd number only when the number is 2 itself.
Select one option. Answers are shown after the test.