Here’s a puzzle that will hone your counting skills.
So were you able to solve the riddle? Leave your answers in the comment section below.
You can check if your answer is correct by clicking on show answer below. If you get the right answer, please do share the riddle with your friends and family on WhatsApp, Facebook and other social networking sites.
Answer:
If you count mentally you can say the following;
As the digit in thousandth place it will appear 100 times. (500 to 599)
Then as a digit in tens place it will appear 10 times (550 to 559)
As a digit in units place it will appear 10 times (5, 15,25….95)
Hence the total number of 5s are;
100 + 10 + 10 = 120
Therefore;
Answer = 120.
If you want to actually write and count here is how it would look;
No. |
Number of 5s |
500 |
1 |
501 |
2 |
502 |
3 |
503 |
4 |
504 |
5 |
505 |
7 |
506 |
8 |
507 |
9 |
508 |
10 |
509 |
11 |
510 |
12 |
511 |
13 |
512 |
14 |
513 |
15 |
514 |
16 |
515 |
18 |
516 |
19 |
517 |
20 |
518 |
21 |
519 |
22 |
520 |
23 |
521 |
24 |
522 |
25 |
523 |
26 |
524 |
27 |
525 |
29 |
526 |
30 |
527 |
31 |
528 |
32 |
529 |
33 |
530 |
34 |
531 |
35 |
532 |
36 |
533 |
37 |
534 |
38 |
535 |
40 |
536 |
41 |
537 |
42 |
538 |
43 |
539 |
44 |
540 |
45 |
541 |
46 |
542 |
47 |
543 |
48 |
544 |
49 |
545 |
51 |
546 |
52 |
547 |
53 |
548 |
54 |
549 |
55 |
550 |
57 |
551 |
59 |
552 |
61 |
553 |
63 |
554 |
65 |
555 |
68 |
556 |
70 |
557 |
72 |
558 |
74 |
559 |
76 |
560 |
77 |
561 |
78 |
562 |
79 |
563 |
80 |
564 |
81 |
565 |
83 |
566 |
84 |
567 |
85 |
568 |
86 |
569 |
87 |
570 |
88 |
571 |
89 |
572 |
90 |
573 |
91 |
574 |
92 |
575 |
94 |
576 |
95 |
577 |
96 |
578 |
97 |
579 |
98 |
580 |
99 |
581 |
100 |
582 |
101 |
583 |
102 |
584 |
103 |
585 |
105 |
586 |
106 |
587 |
107 |
588 |
108 |
589 |
109 |
590 |
110 |
591 |
111 |
592 |
112 |
593 |
113 |
594 |
114 |
595 |
116 |
596 |
117 |
597 |
118 |
598 |
119 |
599 |
120 |
600 |
|