26MAY21WED

Look at this number: 13.
Find its square.
Reverse the given number. Find its square.
What do you observe?

Multiply 21978 by 4.
What do you observe?

1^3 = ?, 5^3 = ?, 3^3 = ?, 1^3+5^3+3^3 = ?
3^3 = ?, 7^3 = ?, 0^3 = ?, 3^3+7^3+0^3 = ?
3^3 = ?, 7^3 = ?, 1^3 = ?, 3^3+7^3+1^3 = ?
4^3 = ?, 0^3 = ?, 7^3 = ?, 4^3+0^3+7^3 = ?

1*9 + 1 + 9 = ?
2*9 + 2 + 9 = ?
3*9 + 3 + 9 = ?
4*9 + 4 + 9 = ?
5*9 + 5 + 9 = ?
6*9 + 6 + 9 = ?
7*9 + 7 + 9 = ?
8*9 + 8 + 9 = ?
9*9 + 9 + 9 = ?

1089*9 = ?
What do you observe?
Will this happen with 10989*9, 109989*9 and 1099989 also? Check.
(This pattern holds good for all numbers in which 10 and 89 are separated by any number of 9s.)







Comments

Post a Comment

Popular posts from this blog

20SEP20SUN

Image
  From Me to Everyone:  08:02 PM English Analyse the sentence: She is leaving for France tomorrow. Voice: ? Active Sentence type: ? Assertive +/-? Affirmative Tense: ? Present Tense form: ? From Me to Everyone:  08:23 PM Continuous is: _____ verb finite leaving: _____ verb non-finite Object: ? None Verb type: intransitive "It is not possible to change the voice." She: pronoun is, leaving: verbs for: adverb (it modifies the meaning of the verb) France: tomorrow France: noun tomorrow: adverb idea: future event Analyse the sentence: Hasn't the parcel been delivered to the right address? Passive voice Interrogative sentence Question type: binary Negative Present From Me to Everyone:  08:40 PM Perfect Hasn't the parcel been delivered to the right address? has: finite verb been, delivered: non-finite verbs object: the parcel verb type: transitive verb Change of voice is possible. Hasn...
Read more

26SEP20

  From Me to Everyone:   05:43 AM 01) Today is 26 September, Saturday. How do you find the date on last Saturday? From Saathvika Tetali to Everyone:   05:49 AM 19 From Me to Everyone:   05:49 AM 02) What is the sum of 3 times 4 and 4 times 5? From Saathvika Tetali to Everyone:   05:52 AM 3times 4 is12 4 time 5 =20 From Harshitha Tetali to Everyone:   05:55 AM 32 From Me to Everyone:   05:55 AM 03) What is the difference between 4 times 10 and 5 times 8? From Harshitha Tetali to Everyone:   06:00 AM 10 0 From Me to Everyone:   06:01 AM 04)   2 times 3 times 4 = ? From Harshitha Tetali to Everyone:   06:02 AM 24 From Me to Everyone:   06:02 AM 05) 3+4 times 4+5 = ? From Harshitha Tetali to Everyone:   06:06 AM 63 From Me to Everyone:   06:06 AM 06) How many 5s make a hundred? From Harshitha Tetali to Everyone:   06:08 AM 20 From Me to Everyone:   06:08 AM...
Read more

20DEC20SUN

శారద నీరదేందు ఘనసార పటీర మరాళ మల్లికా హార తుషార ఫేన రజతాచల కాశ ఫణీశ కుంద మందార సుధా పయోధి సిత తామర సామర వాహినీ శుభాకారత నొప్పు నిన్ మదిని గానగ నెన్నడు గల్గు భారతీ భాగవతం [01] 2 * 4 = 0 * 4 + 2 * 4 = 0 + 8 = 8 [02] 12 * 4 = 10 * 4 + 2 * 4 = 40 + 8 = 48 [03] 22 * 4 = 20 * 4 + 2 * 4 = 80 + 8 = 88 [04] 32 * 4 = 30 * 4 + 2 * 4 = 120 + 8 = 128 [05] 42 * 4 = 40 * 4 + 2 * 4 = 160 + 8 = 168 [06] 52 * 4 = 50 * 4 + 2 * 4 = 200 + 8 = 208 [07] 62 * 4 = 60 * 4 + 2 * 4 = 240 + 8 = 248 [08] 72 * 4 = 70 * 4 + 2 * 4 = 280 + 8 = 288 [09] 82 * 4 = 80 * 4 + 2 * 4 = 320 + 8 = 328 [10] 92 * 4 = 90 * 4 + 2 * 4 = 360 + ...
Read more