Math ka task kro pls
Answers
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Answer:
Step-by-step explanation:
(i) 1 + 2 + 3 - 4 + 5 + 6 + 78 + 9 = 100
(ii) 12 + 3 - 4 + 5+ 67 + 8 + 9 = 100
(iii) 1 +2 + 3 - 4+ 5 + 6 + 78 + 9 = 100
(iv) 123 + 4 - 5 + 67 - 89 = 100
(v) 1+2+3+4+5+6+7+8×9=100
Other problems and solutions:
1."The following curious table shows how to arrange the 9 digits so that the product
of 2 groups is equal to a number represented by the remaining digits."
12 x 483 = 5796
42 x 138 = 5796
18 x 297 = 5346
27 x 198 = 5346
39 x 186 = 7254
48 x 159 = 7632
28 x 157 = 4396
4 x 1738 = 6952
4 x 1963 = 7852
2."The product of 51249876 and 3 (all the digits used once only) is 153749628,
which again contains all 9 digits used once. Again ¬ "
16583742 x 9 = 149253678
32547891 x 6 = 195287346
3. Take the digits in descending order, 9 through 1, and form an expression equal to 100 by inserting the smallest possible number of plus and minus signs.
Answer : To form an expression equal to 100, four plus and minus signs can be inserted between the digits, taken in reverse order, as follows ¬"
98 – 76 + 54 + 3 + 21 = 100
4. "Three plus signs can be inserted within the sequence 123456789 to make a sum of 666 ¬
"123 + 456 + 78 + 9 = 666
5."If minus signs are also allowed (except that a minus sign is not permitted in front of the sequence), what is the only other way to obtain 666 with just three signs ? The sum cannot be achieved with fewer signs."
Answer : 1234 – 567 + 8 – 9 = 666
6."Find the only way to insert four signs (each may be plus or minus) inside 987654321 to make a sum of 666. Again, there is no solution with fewer signs."
Answer : 9 + 87 + 6 + 543 + 21 = 666