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Q.

Find the square root of 169 by the method of repeated subtraction.


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a

18

b

15

c

12

d

13

answer is D.

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Detailed Solution

Concept: The square roots of each number are shown here. The repeated subtraction method involves taking each succeeding odd number out of the provided integer until we reach zero. The square root of the provided integer is the quantity by which the numbers were subtracted.
To find the square root by repeated subtraction method,
https://lh3.googleusercontent.com/-UT5IXjeZUvDbXsVFXl98IKf8nJRZeblniKb2ss_AFDSFoJzTbmalDXDRyB4zbze_r3kbVVAA8Hxg9xYZ1ukEpGwmgwoAmW2Too_XcpyAQBi9VkUYUtTVLKIUs35ajOK2nONAS38fhX_XFatggwWqwhttps://lh3.googleusercontent.com/c2QXBqx3E1jrUO5mjYj54Vh9oXbkWIiJULZgFoV1KR6RUqjB9WdO7aZHV_9niPEb3GIacy-vm5w_YXA_uPbX4LD5FLNXBLbV-VIC7fUS7JgWqwpGgDclqrC8o-4UoWM2TnjcK-Ema4YVnTzx_71glghttps://lh5.googleusercontent.com/-djrhyRjyxyHoq347_5piyh835hGdusGN70VfGGu_QUjHvh6hbFq_oUEkjQ4vR5Qu-KPDoNzobtF9d0Qfg6wikqbZ_IBWU_6x2d632pt5a7OUhj6Qv5F3UdbIItWc9l9MqHM4soqIBz5DfZeH-hSHghttps://lh4.googleusercontent.com/szVeR12OigWu-nyta2uoAJr0da3Nu1MSBAaOEaXIoofWTuz40ddCwQa0tLiAoZUsZJ3HJLwrMJ_rjm6kTCmGE2c-wyaVah-A2_MJtq5HmSXxK99Cj-Hy870GUoG18F-DthOXil9jbzYQcSAgAQjTIghttps://lh6.googleusercontent.com/EQznl5CtYaBIpFjpPwi_Bf-JjN_Ju98xrD8-7y-EhfETlqfuPuP6n49QECyZxDRc00uFJnpb9x4pmaG6nJEN2b40eaQetkfULHGN9RBvnRILAL2hjt7cZBK8yBAnldfiic3CBNBEZ-1bkPMHI9dkLghttps://lh5.googleusercontent.com/vTwdFZmIP0GM8O_wnsTlvsSbnOZjCDkXfAyRNQ5mmIwIFZXsJEhQxItx3fo3tg9ynwmav6DGxPWBGCqWugTE52nct5Vh67EFvfnr5R0p1OYO2Ot4hL6iJcj7_liey1kCZN9SkfwQ0kqY-csCNZa7EQhttps://lh6.googleusercontent.com/hFA3ipJ-Ng36nBeraLrR98g_CXGbdL7zlhLJQ8rV2vss5q7EnR_qFSg2NzZNgddjlkrrwDNQt-j5a7nvWtVF35oc9OcNzESbfXK1gwDrNqEfK8icukF9S-3tHA3JnRvvMCmUztN5toB1OoPnXrGIaghttps://lh6.googleusercontent.com/OE02aNF3ER3kPOMpmixJMmKD5V25uaLplv4qHbRV_JEMaW6phTEiXGY5Ro7UAF8qiF519jXX-Q6bKnIrEcd0LFJ5znyC4ZbYNc0PZoCgWxQjLauvDdfyambC-pvrTUu2JE0J_WT_x81qn0W96WotvAhttps://lh4.googleusercontent.com/u7iphtP7eaAqTO2lhCxZurvK_CeGNNkYupiNIuyq9yKfW_umomhjgDNtGl0l1QhoufmKX1EZTffIpjq1qFMzbuK_-nU62aBBYpLeH4332qH4VLMPaObv2jVsQK-UPGM1d5iXVu8djNxShYTJADl90Qhttps://lh6.googleusercontent.com/7qKT9Qs2lw6_58rCSTuAs63uboKXVruRhbcRPDDJ9VRDdqnCKAF8K48JyPELh_wsl3ZsH-ZtYOriVItYZJiu7WGgAzuxMukYkshW1CGg-DBWE9QdbEYBJvKvXsyen20j-jRfMKa-Z2FGO2-5ECMcCwhttps://lh4.googleusercontent.com/E1L5czenyUsusbCHy5kni9IVI3dkGgQxn_KjNJu7KexU9unh4HdZwRosT-BPoo-bGDZp2hamuTNyOtT4zTEK-HWT4mj0dPZT1K48jIIszknFfUf-Oe_3scpkcnztU-uQS_q8-WwlYIH1_Fg7kd5DVQhttps://lh5.googleusercontent.com/SEZN7SplYtYQXA2xx-D0fX7K5hY2a7-hgsSSYnbFgWN82NNwLPSpczoSztTBzKFz4FdfYvrSQesSOsp6-WvxxNGR7tl4nNewtgVf6CNsWytpckghNgbAJFdZKgQPZVFvCRMQMQEqzC6WqUJPSBdfIQhttps://lh4.googleusercontent.com/ilmojU-Nq7lpp75QnSST5mLOjlbk8FU0vMtTR8w2J4OHmwTsvs7nHwn0wK5xUhZFbN_wd-gpRHKWpTcVanhOK2k1gNn2fOI-_xFgVMK2RfGhMMrZrkZfF3V07CWExx7E9tAQPL1VL_rHEeNOezNkMgWe get 0 in https://lh3.googleusercontent.com/vIjzXHzp5ZUtFAIlnMH0bYiQY-06ENeLjgYxt2wvZO7twt4UpwF9P-RIHcvz6zk4OJaG_i7Fp_Tg1VN60Xt2sRTMOdSj5ECvZiILG4Z2S21U-BCOIWkzoSGO77dOJw2qLw_xb56d0pY8kXl3DduAaw step. https://lh6.googleusercontent.com/jB_SOOMQ7dWs5YsVjOo68YaVKOH2DXfQd9esmF4PlWKLy8eMeWXf6iNSEYRKFllVYxAWR03S7WVE9lXo1lpWGN-qYL3Ex4-r4QqzcAIH0g6VDhJiMvXuoxI-DlzpiWUj7ZplDx0f2zUTugiZLOQySwHence, the correct answer is option 4) 13
 
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