Missing Number Mystery
A sequence of numbers follows a certain pattern:
3, 7, 15, 31, ___, 127
What number should replace the blank?
Free Online 11+ Maths Tutoring – Open to All
Free Online 11+ Maths Tutoring – Open to All Hi! I’m Rithvik Muthuvelu , a GCSE student at King Edward’s School, Birmingham , and I’m offering free weekly online maths sessions to help students prepare for the 11+ entrance exams . These sessions are open to anyone who wants to improve their maths skills—no school restrictions. What You’ll Get Free weekly online maths classes Focused 11+ preparation : problem-solving, arithmetic, word problems, exam strategies Small-group format for better interaction Ideal for Year 4 and Year 5 students How to Join Weekly Session: Saturdays at 2:00 PM — COMING SOON! Google Meet Link: https://meet.google.com/nrk-iwmh-gij Contact Email: rithvikmu1@gmail.com If your child is preparing for the 11+ and would like extra support, feel free to join the class or get in touch. Looking forward to helping more students learn and grow! — Rithvik Muthuvelu
After thinking about it for some time, you will realise that the pattern for this sequence is just doubling the number then adding one. For example, 3 * 2 is 6 and 6 + 1 is 7 or 15 * 2 is 30 and 30 + 1 is 31. Therefore, to figure out the missing number, we just have to double 31 then add :
ReplyDelete31 * 2 = 62
62 + 1 = 63
63 is the missing number