Answer with explanation:
⇒Keep in mind
Sum of evens is Even.
Sum of two odd is even.
Sum of the digits from 1 to 5 , when used once =1+2+3+4+5=15
Now, Sum of the digits also can't be 50 when operation Addition is used three times between the numbers or Digits.
45+1+2+3=51
54+....=can't be equal to 50.
43+5+2+1=51
42+5+3+1=51
41+5+2+3=53
Similarly, when number begin from 3, that is 35 +4+......=can;t be equal to 50.
Now, we have to check when operation addition is used twice between digits or numbers can the sum be 50.
That, is sum of two even and one odd or Sum of two odd and one even should be equal to 50.
→As unit place can be filled in two ways that is 2, and 4 and tens place can be filled by remaining of four numbers.
So, total number of** even numbers** using the digits 1,2,3,4,and 5 =4 ×2=8
These numbers are, 12,32,42,52,14,24,34,and 54.
→And total number of numbers which are odd using the digits 1,2,3,4,and 5 are=4 ×3=12, which are, 21,31,41,51,13,23,43,53,15,25,35,45.
When you take any of these two,two digit numbers between these 20 numbers and combine with another distinct remaining digit ,it can't be equal to 50.
For example:
→ 12 +34+5≠50
→14+35+2≠50
→21+24+5≠50
The student's problem is a mathematical challenge involving the digits 1,2,3,4 and 5. Using these digits, you cannot create a combination that adds up to 50. The closest you can get is 49. ;
By creatively combining the numbers 1, 2, 3, 4, and 5, we achieve a sum of 50 with the combination 21 + 24 + 5. This method involves forming two-digit numbers and ensuring each digit is used only once. Thus, it is possible to reach the target sum using the allowed operations.
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Penjelasan:Dalam Bahasa Arab, 45 menit dapat dinyatakan sebagai خَمْسًا وَأَرْبَعِينَ دَقِيْقَةً (khamsan wa arba'īna daqīqatan) atau خَمْسًا وَأَرْبَعِينَ دَقِيقَة (khamsan wa arba'īna daqīqa), yang secara harfiah berarti "empat puluh lima menit". Berikut adalah perinciannya: خَمْسًا: (khamsan): limaوَأَرْبَعِينَ: (wa arba'īna): dan empat puluhدَقِيْقَةً / دَقِيقَة: (daqīqatan / daqīqa): menit