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Select the correct answerIn a row of children, Ravi is 24 from right and Sham is 17 from left. When they interchange positions Ravi is 38 from right. What will be Shyam‘s present position from the left end?Options3133None3234

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Select the correct answerIn a row of children, Ravi is 24 from right and Sham is 17 from left. When they interchange positions Ravi is 38 from right. What will be Shyam‘s present position from the left end?Options3133None3234

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Solution 1

Vamos resolver o problema passo a passo:

  1. Ravi está na 24ª posição a partir da direita.
  2. Sham está na 17ª posição a partir da esquerda.
  3. Quando eles trocam de posição, Ravi passa a estar na 38ª posição a partir da direita.

Primeiro, vamos determinar o número total de crianças na fila. Quando Ravi e Sham trocam de posição, Ravi passa a estar na 38ª posição a partir da direita. Isso significa que Sham, que agora está na posição original de Ravi, está na 38ª posição a partir da direita.

Como Sham estava originalmente na 17ª posição a partir da esquerda, e agora está na 38ª posição a partir da direita, podemos somar essas duas posições e subtrair 1 para encontrar o número total de crianças na fila:

Total de crianças = 17 (posição original de Sham da esquerda) + 38 (nova posição de Sham da direita) - 1 Total de crianças = 54

Agora, para encontrar a posição atual de Sham a partir da esquerda, sabemos que Ravi está agora na 38ª posição a partir da direita. Como há 54 crianças no total, a posição de Sham a partir da esquerda será:

Posição de Sham da esquerda = Total de crianças - Posição de Ravi da direita + 1 Posição de Sham da esquerda = 54 - 24 + 1 Posição de Sham da esquerda = 31

Portanto, a posição atual de Sham a partir da esquerda é 31.

A resposta correta é: 31

This problem has been solved

Solution 2

The problem can be solved in the following steps:

  1. Initially, Ravi is 24th from the right. After interchanging positions with Shyam, Ravi becomes 38th from the right. This means that Shyam is now 38th from the right.

  2. The total number of children in the row can be calculated by adding Ravi's initial position from the right (24) to Shyam's initial position from the left (17) and subtracting 1 (because we have counted one child, the one who is interchanging positions

This problem has been solved

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