यदि >, ‘+’ को दर्शाता है ‘<‘, ‘-’ को दर्शाता है +, ‘÷’ को दर्शाता है -, ‘=‘ को ×, > को तथा =, ‘<‘ को दर्शाता है तो कौन-सा कथन सही है? / If ‘>’ represents ‘+’, ‘<‘ represents ‘-’, ‘+’ represents ‘÷’, ‘÷’ represents ‘-’, ‘=‘ represents ‘×’, and ‘<‘ represents ‘=’, then which statement is correct? {RRB NTPC 19.01.2017 Shift : III}
A
9 + 9 > 9 = 9
B
9 < 7 ÷ 7 = 6
C
7 # 7 > 7 + 7 = 7 # 7 > 1
D
7 > 7 < 7 + 7 = 14
✔
Correct Answer:
D
— 7 > 7 < 7 + 7 = 14
Explanation: \[
\begin{aligned}7+7-7\div7<14\\\\7+7-1<14\end{aligned}
\]
यदि A का अर्थ ‘-’, C का अर्थ ‘+’ B का अर्थ ‘÷’, E का अर्थ ‘×’ है तो 6C 78B 3A 4E 6 का मान क्या होगा? / If A means ‘-’, C means ‘+’, B means ‘÷’, and E means ‘×’, then what is the value of 6C 78B 3A 4E 6? {RRB NTPC 27.04.2016 Shift : 2}
✔
Correct Answer:
C
— 8
Explanation: \[
\begin{aligned}=6+78\div3-4\times6\\\\=6+26-4\times6\\\\=6+26-24\\\\=32-24=8\end{aligned}
\]
निम्नलिखित समीकरण को सही करने के लिए किन दो चिन्हों को परस्पर बदलना होगा? / Which two signs must be interchanged to make the following equation correct? 5 × 36 – 9 + 31 ÷ 41 = 10 {RRB NTPC 28.04.2016 Shift : III}
A
÷ and -
B
× and +
C
÷ and ×
D
× and -
✔
Correct Answer:
A
— ÷ and -
यदि + का अर्थ ×, - का ÷, × का – और ÷ का + है, तो 18 + 32 – 4 × 8 ÷ 3 का मान ज्ञात करें / If + means ×, - means ÷, × means –, and ÷ means +, then find the value of 18 + 32 – 4 × 8 ÷ 3. {RRB Group-D – 10/10/2018 (Shift-III)}
✔
Correct Answer:
C
— 139
Explanation: \[
\begin{aligned}=18\times32\div4-8+3\\\\=18\times8-8+3\\\\=144-8+3\\\\=147-8\\\\=139\end{aligned}
\]
प्रतीकों के उपयुक्त सेट का चयन करें / Select an appropriate set of symbols.
21 9 13 7 = 195 {RRB NTPC 02.04.2016 Shift : III}
A
×, -, ÷
B
+, ÷, -
C
+, -, ÷
D
×, +, -
✔
Correct Answer:
D
— ×, +, -
Explanation: \[
\begin{aligned}21\times9+13-7=195\\\\189+13-7=195\\\\202-7=195\\\\195=195\end{aligned}
\]
यदि ‘+’ का अर्थ ‘×’, -’-’ का अर्थ ‘÷’, ‘÷’ का अर्थ ‘+’ और ‘×’ ला अर्थ ‘-’ है तो / If ‘+’ means ‘×’, ‘-’ means ‘÷’, ‘÷’ means ‘+’, and ‘×’ means ‘-’, then... 16 ÷ 64 – 4 × 4 + 3 =? {RRB NTPC 30.04.2016 Shift : 3}
✔
Correct Answer:
A
— 20
Explanation: \[
\begin{aligned}16+64\div4-4\times3\\\\(BODMAS)\\\\=16+16-4\times3\\\\=16+16-12\\\\=32-12=20\end{aligned}
\]
यदि ‘<‘ को ‘+’ और (×) को ÷ के रूप में माना जाता है तो ([25 < 15)] × 4) < 1 तो का मान क्या होगा? / If ‘<’ is treated as ‘+’ and (×) as ÷, then what will be the value of ([25 < 15)] × 4) < 1? {RPF SI 16.01.2019 Shift : I}
✔
Correct Answer:
A
— 11
Explanation: \[
\begin{aligned}=([(25+15)]\div4)+1\\\\=(40\div4)+1\\\\=10+1=11\end{aligned}
\]
यदि L का अर्थ +, M का अर्थ -, N का अर्थ × और P का अर्थ ÷ है, तो 28N5L50P5M4 का मान ज्ञात कीजिए / If L means +, M means -, N means ×, and P means ÷, then find the value of 28N5L50P5M4. {RRB Group-D – 29/10/2018 (Shift-III)}
✔
Correct Answer:
B
— 146
Explanation: \[
\begin{aligned}=28\times5+50\div5-4\\\\=28\times5+10-4\\\\=140+6=146\end{aligned}
\]
निम्नलिखित समीकरण को सही करने के लिए किन दो चिन्हों को परस्पर बदलना होगा? / Which two signs must be interchanged to make the following equation correct? 72 ÷ 9 + 5 × 3 – 2 = 41 {RRB NTPC 28.04.2016 Shift : II}
A
÷ and -
B
× and +
C
÷ and ×
D
× and -
✔
Correct Answer:
B
— × and +
Explanation: \[
\begin{aligned}72\div9\times5+3-2=41\\\\8\times5+3-2=41\\\\43-2=41\\\\41=41\end{aligned}
\]
यदि ‘<‘ का अर्थ ‘+’ और ‘+’ का अर्थ ‘÷’ है तो [(5 < 5)] + 3 का मान क्या है? / If ‘<‘ means ‘+’ and ‘+’ means ‘÷’, then what is the value of [(5 < 5)] + 3? {RRB Group-D – 16/11/2018 (Shift-II)}
A
\(\frac{10}{3}\)
B
6
C
3
D
9
✔
Correct Answer:
A
— \(\frac{10}{3}\)
Explanation: \[
\begin{aligned}=[(5<5)]+3\\\\=[5+5]\div3\\\\=\frac{10}{3}\end{aligned}
\]
