0% 0 votes, 0 avg 0 Report a question What’s wrong with this question? You cannot submit an empty report. Please add some details. Duration: 20 minutes Sorry! Test time is over. Number Play Read Test instructions - 📝 Total Questions: 20 🕒 Test Duration: 20 ✅ Test Format: MCQ 📚 Test Topic: Number Play 🏆 Pass Score: 50% N.B. Do not refresh your browser during test time. 1 / 20 Which of these is a palindrome? 454 321 123 678 Incorrect Answer! Correct Answer! Explanation: 2 / 20 How many 5-digit numbers exist? 90,000 99,999 1,00,000 9,000 Incorrect Answer! Correct Answer! Explanation: 3 / 20 Which number is smallest? 1500 3050 2180 2754 Incorrect Answer! Correct Answer! Explanation: 4 / 20 The smallest number with a digit sum of 14 is 68 77 86 59 Incorrect Answer! Correct Answer! Explanation: 5 / 20 Chapter “Number Play” mainly focuses on Thinking with numbers Memorization Calculation only Algebra Incorrect Answer! Correct Answer! Explanation: 6 / 20 Collatz sequences always reach 0 1 5 2 Incorrect Answer! Correct Answer! Explanation: 7 / 20 The digit sum of 345 is 12 9 11 15 Incorrect Answer! Correct Answer! Explanation: 8 / 20 In a 9-cell row, what is the maximum possible number of supercells? 4 5 6 3 Incorrect Answer! Correct Answer! Explanation: 9 / 20 Which number is closest to 10,000? 9950 8400 9590 9000 Incorrect Answer! Correct Answer! Explanation: 10 / 20 6174 is related to Kaprekar process Estimation Palindromes Collatz rule Incorrect Answer! Correct Answer! Explanation: 11 / 20 Who discovered the Kaprekar constant? Newton Ramanujan D. R. Kaprekar Aryabhata Incorrect Answer! Correct Answer! Explanation: 12 / 20 Estimation gives - Approximate value Wrong value Decimal value Exact value Incorrect Answer! Correct Answer! Explanation: 13 / 20 The smallest 5-digit palindrome is 10001 9999 11111 10000 Incorrect Answer! Correct Answer! Explanation: 14 / 20 Pattern problems help develop Guessing Speed writing Memorization Logical thinking Incorrect Answer! Correct Answer! Explanation: 15 / 20 In the Collatz rule, if the number is even, we Add 1 Square it Divide by 2 Multiply by 3 Incorrect Answer! Correct Answer! Explanation: 16 / 20 Kaprekar constant for 3-digit numbers is - 6174 999 495 396 Incorrect Answer! Correct Answer! Explanation: 17 / 20 Estimation is useful when Multiplying Time is limited Accuracy is required Writing answers Incorrect Answer! Correct Answer! Explanation: 18 / 20 The Collatz conjecture is - False Proven Unsolved Disproved Incorrect Answer! Correct Answer! Explanation: 19 / 20 Repeated addition is a form of Estimation Subtraction Division Multiplication Incorrect Answer! Correct Answer! Explanation: 20 / 20 If the number is odd, we Add 2 Divide by 2 Subtract 1 Multiply by 3 and add 1 Incorrect Answer! Correct Answer! Explanation: Hello! Please enter your correct Name and Email to view your results for "Number Play" test. Your score isThe average score is 0%Found this helpful? Challenge your friends! Share the %%quiz_name%% test and see who gets the highest score. LinkedIn Facebook VKontakte Hello %%user_name%%! 👨👩👧👦 Join Our Community 👇👇 0% Restart Test Give feedback on the "Number Play" test. Thanks for your feedback. Send feedback