Question

A) Determinati numerele de forma abc stiind ca abc = 7 - 100 + 8 - 10 + 1 B)Determinati cifrele a.b.c stiind ca 634 = a - 100 + b - 10 + c C)Determinati cifrele a,b,b,d sriind ca 4a5c = b - 1000 + 3 - 100 + d - 10 + 9 D) Determinati cifrele a,b,c stiind ca ab2d = b - 1000 + c - 100 + d - 10 + a am nevoie urgeeeeennnttt

Answer 1

Determinati numerele de forma abc stiind ca abc = 7 x 100 + 8x 10 + 1

a=7, b=8, c=1

781 = 7 x 100 + 8x 10 + 1

Determinati cifrele a.b.c stiind ca 634 = a x100 + b x10 + c

a=6, b=3, c=4

634 =6 x100 + 3 x10 + 4

Determinati cifrele a,b,b,d sriind ca 4a5c = bx1000 + 3 x 100 + d x10 + 9

a=3, b= 4, c=9, d=5

4359 = 4x1000 + 3 x 100 + 5 x10 + 9

Answer 2

a)    abc = 7 x 100 + 8 x 10 + 1 =  781  ⇒ a = 7;  b = 8  si c = 1

b)   634 = a × 100 + b × 10 + c

634 = 6 × 100 + 3 × 10 + 4  ⇔    a = 6;   b = 3  si  c = 4

c)  4a5c = b × 1 000 + 3 × 100 + d × 10 + 9

4 × 1 000 + 3 × 100 + 5 × 10 + 9 = 4 000 + 300 + 50 + 9 = 4 359

⇔  a = 3;   b = 4;   d = 5   si c = 9